diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce394fd4..99e89c16 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,13 +2,28 @@ Changelog
 =========
 
 
-master (unreleased)
-----------------
+3.0.1 (May 24 2017)
+-------------------
 
 * Fix handling methods and attributes of static arrays, objects and primitives.
   Solves the issue [#937](https://github.com/mozilla/nunjucks/issues/937)
-* Add support for python-style array slices with Jinja compat enabled. Thanks
-  Frankie Dintino.
+
+* Add support for python-style array slices with Jinja compat enabled.
+  Fixes [#188](https://github.com/mozilla/nunjucks/issues/188); merge of
+  [#976](https://github.com/mozilla/nunjucks/pull/976).
+
+* Fix call blocks having access to their parent scope. Fixes
+  [#906](https://github.com/mozilla/nunjucks/issues/906); merge of
+  [#994](https://github.com/mozilla/nunjucks/pull/994).
+
+* Fix a bug that caused capturing block tags (e.g. set/endset,
+  filter/endfilter) to write to the global buffer rather than capturing
+  their contents. Fixes
+  [#914](https://github.com/mozilla/nunjucks/issues/914) and
+  [#972](https://github.com/mozilla/nunjucks/issues/972); merge of
+  [#990](https://github.com/mozilla/nunjucks/pull/990). Thanks [Noah
+  Lange](@noahlange).
+
 
 3.0.0 (Nov 5 2016)
 ----------------
diff --git a/browser/nunjucks-slim.js b/browser/nunjucks-slim.js
index 0ab25cf0..04248673 100644
--- a/browser/nunjucks-slim.js
+++ b/browser/nunjucks-slim.js
@@ -1,4 +1,4 @@
-/*! Browser bundle of nunjucks 3.0.0 (slim, only works with precompiled templates) */
+/*! Browser bundle of nunjucks 3.0.1 (slim, only works with precompiled templates) */
 (function webpackUniversalModuleDefinition(root, factory) {
 	if(typeof exports === 'object' && typeof module === 'object')
 		module.exports = factory();
@@ -53,13 +53,13 @@ return /******/ (function(modules) { // webpackBootstrap
 /************************************************************************/
 /******/ ([
 /* 0 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
 	var lib = __webpack_require__(1);
 	var env = __webpack_require__(2);
-	var Loader = __webpack_require__(14);
+	var Loader = __webpack_require__(15);
 	var loaders = __webpack_require__(3);
 	var precompile = __webpack_require__(3);
 
@@ -79,7 +79,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports.lib = lib;
 	module.exports.nodes = __webpack_require__(3);
 
-	module.exports.installJinjaCompat = __webpack_require__(15);
+	module.exports.installJinjaCompat = __webpack_require__(16);
 
 	// A single instance of an environment, since this is so commonly used
 
@@ -143,9 +143,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	}
 
 
-/***/ },
+/***/ }),
 /* 1 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	'use strict';
 
@@ -448,9 +448,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 2 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -469,7 +469,7 @@ return /******/ (function(modules) { // webpackBootstrap
 
 	// Unconditionally load in this loader, even if no other ones are
 	// included (possible in the slim browser build)
-	builtin_loaders.PrecompiledLoader = __webpack_require__(13);
+	builtin_loaders.PrecompiledLoader = __webpack_require__(14);
 
 	// If the user is using the async API, *always* call it
 	// asynchronously even if the template was synchronous.
@@ -1047,15 +1047,15 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 3 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	
 
-/***/ },
+/***/ }),
 /* 4 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	"use strict";
 
@@ -1125,9 +1125,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 5 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	/* WEBPACK VAR INJECTION */(function(global) {"use strict";
 
@@ -1207,9 +1207,12 @@ return /******/ (function(modules) { // webpackBootstrap
 
 	// Safari 6 and 6.1 for desktop, iPad, and iPhone are the only browsers that
 	// have WebKitMutationObserver but not un-prefixed MutationObserver.
-	// Must use `global` instead of `window` to work in both frames and web
+	// Must use `global` or `self` instead of `window` to work in both frames and web
 	// workers. `global` is a provision of Browserify, Mr, Mrs, or Mop.
-	var BrowserMutationObserver = global.MutationObserver || global.WebKitMutationObserver;
+
+	/* globals self */
+	var scope = typeof global !== "undefined" ? global : self;
+	var BrowserMutationObserver = scope.MutationObserver || scope.WebKitMutationObserver;
 
 	// MutationObservers are desirable because they have high priority and work
 	// reliably everywhere they are implemented.
@@ -1352,9 +1355,9 @@ return /******/ (function(modules) { // webpackBootstrap
 
 	/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))
 
-/***/ },
+/***/ }),
 /* 6 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	'use strict';
 
@@ -1422,9 +1425,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = extend(Object, 'Object', {});
 
 
-/***/ },
+/***/ }),
 /* 7 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -1439,9 +1442,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	}
 
 	var filters = {
-	    abs: function(n) {
-	        return Math.abs(n);
-	    },
+	    abs: Math.abs,
 
 	    batch: function(arr, linecount, fill_with) {
 	        var i;
@@ -2021,9 +2022,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = filters;
 
 
-/***/ },
+/***/ }),
 /* 8 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -2389,9 +2390,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 9 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	'use strict';
 
@@ -2474,9 +2475,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = globals;
 
 
-/***/ },
+/***/ }),
 /* 10 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/* WEBPACK VAR INJECTION */(function(setImmediate, process) {// MIT license (by Elan Shanker).
 	(function(globals) {
@@ -2562,17 +2563,13 @@ return /******/ (function(modules) { // webpackBootstrap
 	  }
 	})(this);
 
-	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(11).setImmediate, __webpack_require__(3)))
+	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(11).setImmediate, __webpack_require__(13)))
 
-/***/ },
+/***/ }),
 /* 11 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
-	/* WEBPACK VAR INJECTION */(function(setImmediate, clearImmediate) {var nextTick = __webpack_require__(12).nextTick;
 	var apply = Function.prototype.apply;
-	var slice = Array.prototype.slice;
-	var immediateIds = {};
-	var nextImmediateId = 0;
 
 	// DOM APIs, for completeness
 
@@ -2583,7 +2580,11 @@ return /******/ (function(modules) { // webpackBootstrap
 	  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
 	};
 	exports.clearTimeout =
-	exports.clearInterval = function(timeout) { timeout.close(); };
+	exports.clearInterval = function(timeout) {
+	  if (timeout) {
+	    timeout.close();
+	  }
+	};
 
 	function Timeout(id, clearFn) {
 	  this._id = id;
@@ -2617,139 +2618,218 @@ return /******/ (function(modules) { // webpackBootstrap
 	  }
 	};
 
-	// That's not how node.js implements it but the exposed api is the same.
-	exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
-	  var id = nextImmediateId++;
-	  var args = arguments.length < 2 ? false : slice.call(arguments, 1);
-
-	  immediateIds[id] = true;
-
-	  nextTick(function onNextTick() {
-	    if (immediateIds[id]) {
-	      // fn.call() is faster so we optimize for the common use-case
-	      // @see http://jsperf.com/call-apply-segu
-	      if (args) {
-	        fn.apply(null, args);
-	      } else {
-	        fn.call(null);
-	      }
-	      // Prevent ids from leaking
-	      exports.clearImmediate(id);
-	    }
-	  });
-
-	  return id;
-	};
+	// setimmediate attaches itself to the global object
+	__webpack_require__(12);
+	exports.setImmediate = setImmediate;
+	exports.clearImmediate = clearImmediate;
 
-	exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
-	  delete immediateIds[id];
-	};
-	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(11).setImmediate, __webpack_require__(11).clearImmediate))
 
-/***/ },
+/***/ }),
 /* 12 */
-/***/ function(module, exports) {
+/***/ (function(module, exports, __webpack_require__) {
 
-	// shim for using process in browser
+	/* WEBPACK VAR INJECTION */(function(global, process) {(function (global, undefined) {
+	    "use strict";
 
-	var process = module.exports = {};
-	var queue = [];
-	var draining = false;
-	var currentQueue;
-	var queueIndex = -1;
-
-	function cleanUpNextTick() {
-	    draining = false;
-	    if (currentQueue.length) {
-	        queue = currentQueue.concat(queue);
-	    } else {
-	        queueIndex = -1;
+	    if (global.setImmediate) {
+	        return;
 	    }
-	    if (queue.length) {
-	        drainQueue();
+
+	    var nextHandle = 1; // Spec says greater than zero
+	    var tasksByHandle = {};
+	    var currentlyRunningATask = false;
+	    var doc = global.document;
+	    var registerImmediate;
+
+	    function setImmediate(callback) {
+	      // Callback can either be a function or a string
+	      if (typeof callback !== "function") {
+	        callback = new Function("" + callback);
+	      }
+	      // Copy function arguments
+	      var args = new Array(arguments.length - 1);
+	      for (var i = 0; i < args.length; i++) {
+	          args[i] = arguments[i + 1];
+	      }
+	      // Store and register the task
+	      var task = { callback: callback, args: args };
+	      tasksByHandle[nextHandle] = task;
+	      registerImmediate(nextHandle);
+	      return nextHandle++;
 	    }
-	}
 
-	function drainQueue() {
-	    if (draining) {
-	        return;
+	    function clearImmediate(handle) {
+	        delete tasksByHandle[handle];
 	    }
-	    var timeout = setTimeout(cleanUpNextTick);
-	    draining = true;
 
-	    var len = queue.length;
-	    while(len) {
-	        currentQueue = queue;
-	        queue = [];
-	        while (++queueIndex < len) {
-	            if (currentQueue) {
-	                currentQueue[queueIndex].run();
+	    function run(task) {
+	        var callback = task.callback;
+	        var args = task.args;
+	        switch (args.length) {
+	        case 0:
+	            callback();
+	            break;
+	        case 1:
+	            callback(args[0]);
+	            break;
+	        case 2:
+	            callback(args[0], args[1]);
+	            break;
+	        case 3:
+	            callback(args[0], args[1], args[2]);
+	            break;
+	        default:
+	            callback.apply(undefined, args);
+	            break;
+	        }
+	    }
+
+	    function runIfPresent(handle) {
+	        // From the spec: "Wait until any invocations of this algorithm started before this one have completed."
+	        // So if we're currently running a task, we'll need to delay this invocation.
+	        if (currentlyRunningATask) {
+	            // Delay by doing a setTimeout. setImmediate was tried instead, but in Firefox 7 it generated a
+	            // "too much recursion" error.
+	            setTimeout(runIfPresent, 0, handle);
+	        } else {
+	            var task = tasksByHandle[handle];
+	            if (task) {
+	                currentlyRunningATask = true;
+	                try {
+	                    run(task);
+	                } finally {
+	                    clearImmediate(handle);
+	                    currentlyRunningATask = false;
+	                }
 	            }
 	        }
-	        queueIndex = -1;
-	        len = queue.length;
 	    }
-	    currentQueue = null;
-	    draining = false;
-	    clearTimeout(timeout);
-	}
 
-	process.nextTick = function (fun) {
-	    var args = new Array(arguments.length - 1);
-	    if (arguments.length > 1) {
-	        for (var i = 1; i < arguments.length; i++) {
-	            args[i - 1] = arguments[i];
+	    function installNextTickImplementation() {
+	        registerImmediate = function(handle) {
+	            process.nextTick(function () { runIfPresent(handle); });
+	        };
+	    }
+
+	    function canUsePostMessage() {
+	        // The test against `importScripts` prevents this implementation from being installed inside a web worker,
+	        // where `global.postMessage` means something completely different and can't be used for this purpose.
+	        if (global.postMessage && !global.importScripts) {
+	            var postMessageIsAsynchronous = true;
+	            var oldOnMessage = global.onmessage;
+	            global.onmessage = function() {
+	                postMessageIsAsynchronous = false;
+	            };
+	            global.postMessage("", "*");
+	            global.onmessage = oldOnMessage;
+	            return postMessageIsAsynchronous;
 	        }
 	    }
-	    queue.push(new Item(fun, args));
-	    if (queue.length === 1 && !draining) {
-	        setTimeout(drainQueue, 0);
+
+	    function installPostMessageImplementation() {
+	        // Installs an event handler on `global` for the `message` event: see
+	        // * https://developer.mozilla.org/en/DOM/window.postMessage
+	        // * http://www.whatwg.org/specs/web-apps/current-work/multipage/comms.html#crossDocumentMessages
+
+	        var messagePrefix = "setImmediate$" + Math.random() + "$";
+	        var onGlobalMessage = function(event) {
+	            if (event.source === global &&
+	                typeof event.data === "string" &&
+	                event.data.indexOf(messagePrefix) === 0) {
+	                runIfPresent(+event.data.slice(messagePrefix.length));
+	            }
+	        };
+
+	        if (global.addEventListener) {
+	            global.addEventListener("message", onGlobalMessage, false);
+	        } else {
+	            global.attachEvent("onmessage", onGlobalMessage);
+	        }
+
+	        registerImmediate = function(handle) {
+	            global.postMessage(messagePrefix + handle, "*");
+	        };
 	    }
-	};
 
-	// v8 likes predictible objects
-	function Item(fun, array) {
-	    this.fun = fun;
-	    this.array = array;
-	}
-	Item.prototype.run = function () {
-	    this.fun.apply(null, this.array);
-	};
-	process.title = 'browser';
-	process.browser = true;
-	process.env = {};
-	process.argv = [];
-	process.version = ''; // empty string to avoid regexp issues
-	process.versions = {};
-
-	function noop() {}
-
-	process.on = noop;
-	process.addListener = noop;
-	process.once = noop;
-	process.off = noop;
-	process.removeListener = noop;
-	process.removeAllListeners = noop;
-	process.emit = noop;
-
-	process.binding = function (name) {
-	    throw new Error('process.binding is not supported');
-	};
+	    function installMessageChannelImplementation() {
+	        var channel = new MessageChannel();
+	        channel.port1.onmessage = function(event) {
+	            var handle = event.data;
+	            runIfPresent(handle);
+	        };
 
-	process.cwd = function () { return '/' };
-	process.chdir = function (dir) {
-	    throw new Error('process.chdir is not supported');
-	};
-	process.umask = function() { return 0; };
+	        registerImmediate = function(handle) {
+	            channel.port2.postMessage(handle);
+	        };
+	    }
+
+	    function installReadyStateChangeImplementation() {
+	        var html = doc.documentElement;
+	        registerImmediate = function(handle) {
+	            // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
+	            // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
+	            var script = doc.createElement("script");
+	            script.onreadystatechange = function () {
+	                runIfPresent(handle);
+	                script.onreadystatechange = null;
+	                html.removeChild(script);
+	                script = null;
+	            };
+	            html.appendChild(script);
+	        };
+	    }
 
+	    function installSetTimeoutImplementation() {
+	        registerImmediate = function(handle) {
+	            setTimeout(runIfPresent, 0, handle);
+	        };
+	    }
+
+	    // If supported, we should attach to the prototype of global, since that is where setTimeout et al. live.
+	    var attachTo = Object.getPrototypeOf && Object.getPrototypeOf(global);
+	    attachTo = attachTo && attachTo.setTimeout ? attachTo : global;
+
+	    // Don't get fooled by e.g. browserify environments.
+	    if ({}.toString.call(global.process) === "[object process]") {
+	        // For Node.js before 0.9
+	        installNextTickImplementation();
+
+	    } else if (canUsePostMessage()) {
+	        // For non-IE10 modern browsers
+	        installPostMessageImplementation();
+
+	    } else if (global.MessageChannel) {
+	        // For web workers, where supported
+	        installMessageChannelImplementation();
+
+	    } else if (doc && "onreadystatechange" in doc.createElement("script")) {
+	        // For IE 6–8
+	        installReadyStateChangeImplementation();
+
+	    } else {
+	        // For older browsers
+	        installSetTimeoutImplementation();
+	    }
+
+	    attachTo.setImmediate = setImmediate;
+	    attachTo.clearImmediate = clearImmediate;
+	}(typeof self === "undefined" ? typeof global === "undefined" ? this : global : self));
+
+	/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }()), __webpack_require__(13)))
 
-/***/ },
+/***/ }),
 /* 13 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports) {
+
+	
+
+/***/ }),
+/* 14 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
-	var Loader = __webpack_require__(14);
+	var Loader = __webpack_require__(15);
 
 	var PrecompiledLoader = Loader.extend({
 	    init: function(compiledTemplates) {
@@ -2771,9 +2851,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = PrecompiledLoader;
 
 
-/***/ },
-/* 14 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 15 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -2810,172 +2890,317 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = Loader;
 
 
-/***/ },
-/* 15 */
-/***/ function(module, exports) {
+/***/ }),
+/* 16 */
+/***/ (function(module, exports) {
 
 	function installCompat() {
-	  'use strict';
+	    'use strict';
+
+	    // This must be called like `nunjucks.installCompat` so that `this`
+	    // references the nunjucks instance
+	    var runtime = this.runtime; // jshint ignore:line
+	    var lib = this.lib; // jshint ignore:line
+	    var Compiler = this.compiler.Compiler; // jshint ignore:line
+	    var Parser = this.parser.Parser; // jshint ignore:line
+	    var nodes = this.nodes; // jshint ignore:line
+	    var lexer = this.lexer; // jshint ignore:line
+
+	    var orig_contextOrFrameLookup = runtime.contextOrFrameLookup;
+	    var orig_Compiler_assertType = Compiler.prototype.assertType;
+	    var orig_Parser_parseAggregate = Parser.prototype.parseAggregate;
+	    var orig_memberLookup = runtime.memberLookup;
+
+	    function uninstall() {
+	        runtime.contextOrFrameLookup = orig_contextOrFrameLookup;
+	        Compiler.prototype.assertType = orig_Compiler_assertType;
+	        Parser.prototype.parseAggregate = orig_Parser_parseAggregate;
+	        runtime.memberLookup = orig_memberLookup;
+	    }
+
+	    runtime.contextOrFrameLookup = function(context, frame, key) {
+	        var val = orig_contextOrFrameLookup.apply(this, arguments);
+	        if (val === undefined) {
+	            switch (key) {
+	            case 'True':
+	                return true;
+	            case 'False':
+	                return false;
+	            case 'None':
+	                return null;
+	            }
+	        }
 
-	  // This must be called like `nunjucks.installCompat` so that `this`
-	  // references the nunjucks instance
-	  var runtime = this.runtime; // jshint ignore:line
-	  var lib = this.lib; // jshint ignore:line
-
-	  var orig_contextOrFrameLookup = runtime.contextOrFrameLookup;
-	  runtime.contextOrFrameLookup = function(context, frame, key) {
-	    var val = orig_contextOrFrameLookup.apply(this, arguments);
-	    if (val === undefined) {
-	      switch (key) {
-	      case 'True':
-	        return true;
-	      case 'False':
-	        return false;
-	      case 'None':
-	        return null;
-	      }
+	        return val;
+	    };
+
+	    var Slice = nodes.Node.extend('Slice', {
+	        fields: ['start', 'stop', 'step'],
+	        init: function(lineno, colno, start, stop, step) {
+	            start = start || new nodes.Literal(lineno, colno, null);
+	            stop = stop || new nodes.Literal(lineno, colno, null);
+	            step = step || new nodes.Literal(lineno, colno, 1);
+	            this.parent(lineno, colno, start, stop, step);
+	        }
+	    });
+
+	    Compiler.prototype.assertType = function(node) {
+	        if (node instanceof Slice) {
+	            return;
+	        }
+	        return orig_Compiler_assertType.apply(this, arguments);
+	    };
+	    Compiler.prototype.compileSlice = function(node, frame) {
+	        this.emit('(');
+	        this._compileExpression(node.start, frame);
+	        this.emit('),(');
+	        this._compileExpression(node.stop, frame);
+	        this.emit('),(');
+	        this._compileExpression(node.step, frame);
+	        this.emit(')');
+	    };
+
+	    function getTokensState(tokens) {
+	        return {
+	            index: tokens.index,
+	            lineno: tokens.lineno,
+	            colno: tokens.colno
+	        };
 	    }
 
-	    return val;
-	  };
+	    Parser.prototype.parseAggregate = function() {
+	        var self = this;
+	        var origState = getTokensState(this.tokens);
+	        // Set back one accounting for opening bracket/parens
+	        origState.colno--;
+	        origState.index--;
+	        try {
+	            return orig_Parser_parseAggregate.apply(this);
+	        } catch(e) {
+	            var errState = getTokensState(this.tokens);
+	            var rethrow = function() {
+	                lib.extend(self.tokens, errState);
+	                return e;
+	            };
 
-	  var orig_memberLookup = runtime.memberLookup;
-	  var ARRAY_MEMBERS = {
-	    pop: function(index) {
-	      if (index === undefined) {
-	        return this.pop();
-	      }
-	      if (index >= this.length || index < 0) {
-	        throw new Error('KeyError');
-	      }
-	      return this.splice(index, 1);
-	    },
-	    append: function(element) {
-	        return this.push(element);
-	    },
-	    remove: function(element) {
-	      for (var i = 0; i < this.length; i++) {
-	        if (this[i] === element) {
-	          return this.splice(i, 1);
+	            // Reset to state before original parseAggregate called
+	            lib.extend(this.tokens, origState);
+	            this.peeked = false;
+
+	            var tok = this.peekToken();
+	            if (tok.type !== lexer.TOKEN_LEFT_BRACKET) {
+	                throw rethrow();
+	            } else {
+	                this.nextToken();
+	            }
+
+	            var node = new Slice(tok.lineno, tok.colno);
+
+	            // If we don't encounter a colon while parsing, this is not a slice,
+	            // so re-raise the original exception.
+	            var isSlice = false;
+
+	            for (var i = 0; i <= node.fields.length; i++) {
+	                if (this.skip(lexer.TOKEN_RIGHT_BRACKET)) {
+	                    break;
+	                }
+	                if (i === node.fields.length) {
+	                    if (isSlice) {
+	                        this.fail('parseSlice: too many slice components', tok.lineno, tok.colno);
+	                    } else {
+	                        break;
+	                    }
+	                }
+	                if (this.skip(lexer.TOKEN_COLON)) {
+	                    isSlice = true;
+	                } else {
+	                    var field = node.fields[i];
+	                    node[field] = this.parseExpression();
+	                    isSlice = this.skip(lexer.TOKEN_COLON) || isSlice;
+	                }
+	            }
+	            if (!isSlice) {
+	                throw rethrow();
+	            }
+	            return new nodes.Array(tok.lineno, tok.colno, [node]);
 	        }
-	      }
-	      throw new Error('ValueError');
-	    },
-	    count: function(element) {
-	      var count = 0;
-	      for (var i = 0; i < this.length; i++) {
-	        if (this[i] === element) {
-	          count++;
+	    };
+
+	    function sliceLookup(obj, start, stop, step) {
+	        obj = obj || [];
+	        if (start === null) {
+	            start = (step < 0) ? (obj.length - 1) : 0;
+	        }
+	        if (stop === null) {
+	            stop = (step < 0) ? -1 : obj.length;
+	        } else {
+	            if (stop < 0) {
+	                stop += obj.length;
+	            }
 	        }
-	      }
-	      return count;
-	    },
-	    index: function(element) {
-	      var i;
-	      if ((i = this.indexOf(element)) === -1) {
-	        throw new Error('ValueError');
-	      }
-	      return i;
-	    },
-	    find: function(element) {
-	      return this.indexOf(element);
-	    },
-	    insert: function(index, elem) {
-	      return this.splice(index, 0, elem);
-	    }
-	  };
-	  var OBJECT_MEMBERS = {
-	    items: function() {
-	      var ret = [];
-	      for(var k in this) {
-	        ret.push([k, this[k]]);
-	      }
-	      return ret;
-	    },
-	    values: function() {
-	      var ret = [];
-	      for(var k in this) {
-	        ret.push(this[k]);
-	      }
-	      return ret;
-	    },
-	    keys: function() {
-	      var ret = [];
-	      for(var k in this) {
-	        ret.push(k);
-	      }
-	      return ret;
-	    },
-	    get: function(key, def) {
-	      var output = this[key];
-	      if (output === undefined) {
-	        output = def;
-	      }
-	      return output;
-	    },
-	    has_key: function(key) {
-	      return this.hasOwnProperty(key);
-	    },
-	    pop: function(key, def) {
-	      var output = this[key];
-	      if (output === undefined && def !== undefined) {
-	        output = def;
-	      } else if (output === undefined) {
-	        throw new Error('KeyError');
-	      } else {
-	        delete this[key];
-	      }
-	      return output;
-	    },
-	    popitem: function() {
-	      for (var k in this) {
-	        // Return the first object pair.
-	        var val = this[k];
-	        delete this[k];
-	        return [k, val];
-	      }
-	      throw new Error('KeyError');
-	    },
-	    setdefault: function(key, def) {
-	      if (key in this) {
-	        return this[key];
-	      }
-	      if (def === undefined) {
-	        def = null;
-	      }
-	      return this[key] = def;
-	    },
-	    update: function(kwargs) {
-	      for (var k in kwargs) {
-	        this[k] = kwargs[k];
-	      }
-	      return null;  // Always returns None
-	    }
-	  };
-	  OBJECT_MEMBERS.iteritems = OBJECT_MEMBERS.items;
-	  OBJECT_MEMBERS.itervalues = OBJECT_MEMBERS.values;
-	  OBJECT_MEMBERS.iterkeys = OBJECT_MEMBERS.keys;
-	  runtime.memberLookup = function(obj, val, autoescape) { // jshint ignore:line
-	    obj = obj || {};
 
-	    // If the object is an object, return any of the methods that Python would
-	    // otherwise provide.
-	    if (lib.isArray(obj) && ARRAY_MEMBERS.hasOwnProperty(val)) {
-	      return function() {return ARRAY_MEMBERS[val].apply(obj, arguments);};
-	    }
+	        if (start < 0) {
+	            start += obj.length;
+	        }
+
+	        var results = [];
 
-	    if (lib.isObject(obj) && OBJECT_MEMBERS.hasOwnProperty(val)) {
-	      return function() {return OBJECT_MEMBERS[val].apply(obj, arguments);};
+	        for (var i = start; ; i += step) {
+	            if (i < 0 || i > obj.length) {
+	                break;
+	            }
+	            if (step > 0 && i >= stop) {
+	                break;
+	            }
+	            if (step < 0 && i <= stop) {
+	                break;
+	            }
+	            results.push(runtime.memberLookup(obj, i));
+	        }
+	        return results;
 	    }
 
-	    return orig_memberLookup.apply(this, arguments);
-	  };
+	    var ARRAY_MEMBERS = {
+	        pop: function(index) {
+	            if (index === undefined) {
+	                return this.pop();
+	            }
+	            if (index >= this.length || index < 0) {
+	                throw new Error('KeyError');
+	            }
+	            return this.splice(index, 1);
+	        },
+	        append: function(element) {
+	                return this.push(element);
+	        },
+	        remove: function(element) {
+	            for (var i = 0; i < this.length; i++) {
+	                if (this[i] === element) {
+	                    return this.splice(i, 1);
+	                }
+	            }
+	            throw new Error('ValueError');
+	        },
+	        count: function(element) {
+	            var count = 0;
+	            for (var i = 0; i < this.length; i++) {
+	                if (this[i] === element) {
+	                    count++;
+	                }
+	            }
+	            return count;
+	        },
+	        index: function(element) {
+	            var i;
+	            if ((i = this.indexOf(element)) === -1) {
+	                throw new Error('ValueError');
+	            }
+	            return i;
+	        },
+	        find: function(element) {
+	            return this.indexOf(element);
+	        },
+	        insert: function(index, elem) {
+	            return this.splice(index, 0, elem);
+	        }
+	    };
+	    var OBJECT_MEMBERS = {
+	        items: function() {
+	            var ret = [];
+	            for(var k in this) {
+	                ret.push([k, this[k]]);
+	            }
+	            return ret;
+	        },
+	        values: function() {
+	            var ret = [];
+	            for(var k in this) {
+	                ret.push(this[k]);
+	            }
+	            return ret;
+	        },
+	        keys: function() {
+	            var ret = [];
+	            for(var k in this) {
+	                ret.push(k);
+	            }
+	            return ret;
+	        },
+	        get: function(key, def) {
+	            var output = this[key];
+	            if (output === undefined) {
+	                output = def;
+	            }
+	            return output;
+	        },
+	        has_key: function(key) {
+	            return this.hasOwnProperty(key);
+	        },
+	        pop: function(key, def) {
+	            var output = this[key];
+	            if (output === undefined && def !== undefined) {
+	                output = def;
+	            } else if (output === undefined) {
+	                throw new Error('KeyError');
+	            } else {
+	                delete this[key];
+	            }
+	            return output;
+	        },
+	        popitem: function() {
+	            for (var k in this) {
+	                // Return the first object pair.
+	                var val = this[k];
+	                delete this[k];
+	                return [k, val];
+	            }
+	            throw new Error('KeyError');
+	        },
+	        setdefault: function(key, def) {
+	            if (key in this) {
+	                return this[key];
+	            }
+	            if (def === undefined) {
+	                def = null;
+	            }
+	            return this[key] = def;
+	        },
+	        update: function(kwargs) {
+	            for (var k in kwargs) {
+	                this[k] = kwargs[k];
+	            }
+	            return null;    // Always returns None
+	        }
+	    };
+	    OBJECT_MEMBERS.iteritems = OBJECT_MEMBERS.items;
+	    OBJECT_MEMBERS.itervalues = OBJECT_MEMBERS.values;
+	    OBJECT_MEMBERS.iterkeys = OBJECT_MEMBERS.keys;
+	    runtime.memberLookup = function(obj, val, autoescape) { // jshint ignore:line
+	        if (arguments.length === 4) {
+	            return sliceLookup.apply(this, arguments);
+	        }
+	        obj = obj || {};
+
+	        // If the object is an object, return any of the methods that Python would
+	        // otherwise provide.
+	        if (lib.isArray(obj) && ARRAY_MEMBERS.hasOwnProperty(val)) {
+	            return function() {return ARRAY_MEMBERS[val].apply(obj, arguments);};
+	        }
+
+	        if (lib.isObject(obj) && OBJECT_MEMBERS.hasOwnProperty(val)) {
+	            return function() {return OBJECT_MEMBERS[val].apply(obj, arguments);};
+	        }
+
+	        return orig_memberLookup.apply(this, arguments);
+	    };
+
+	    return uninstall;
 	}
 
 	module.exports = installCompat;
 
 
-/***/ }
+/***/ })
 /******/ ])
 });
 ;
\ No newline at end of file
diff --git a/browser/nunjucks-slim.min.js b/browser/nunjucks-slim.min.js
index 013b6356..3af13365 100644
--- a/browser/nunjucks-slim.min.js
+++ b/browser/nunjucks-slim.min.js
@@ -1,2 +1,2 @@
-/*! Browser bundle of nunjucks 3.0.0 (slim, only works with precompiled templates) */
-!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.nunjucks=e():t.nunjucks=e()}(this,function(){return function(t){function e(r){if(n[r])return n[r].exports;var i=n[r]={exports:{},id:r,loaded:!1};return t[r].call(i.exports,i,i.exports,e),i.loaded=!0,i.exports}var n={};return e.m=t,e.c=n,e.p="",e(0)}([function(t,e,n){"use strict";var r=n(1),i=n(2),o=n(14),s=n(3),u=n(3);t.exports={},t.exports.Environment=i.Environment,t.exports.Template=i.Template,t.exports.Loader=o,t.exports.FileSystemLoader=s.FileSystemLoader,t.exports.PrecompiledLoader=s.PrecompiledLoader,t.exports.WebLoader=s.WebLoader,t.exports.compiler=n(3),t.exports.parser=n(3),t.exports.lexer=n(3),t.exports.runtime=n(8),t.exports.lib=r,t.exports.nodes=n(3),t.exports.installJinjaCompat=n(15);var a;t.exports.configure=function(t,e){e=e||{},r.isObject(t)&&(e=t,t=null);var n;return s.FileSystemLoader?n=new s.FileSystemLoader(t,{watch:e.watch,noCache:e.noCache}):s.WebLoader&&(n=new s.WebLoader(t,{useCache:e.web&&e.web.useCache,async:e.web&&e.web.async})),a=new i.Environment(n,e),e&&e.express&&a.express(e.express),a},t.exports.compile=function(e,n,r,i){return a||t.exports.configure(),new t.exports.Template(e,n,r,i)},t.exports.render=function(e,n,r){return a||t.exports.configure(),a.render(e,n,r)},t.exports.renderString=function(e,n,r){return a||t.exports.configure(),a.renderString(e,n,r)},u&&(t.exports.precompile=u.precompile,t.exports.precompileString=u.precompileString)},function(t,e){"use strict";var n=Array.prototype,r=Object.prototype,i={"&":"&amp;",'"':"&quot;","'":"&#39;","<":"&lt;",">":"&gt;"},o=/[&"'<>]/g,s=function(t){return i[t]},e=t.exports={};e.prettifyError=function(t,n,r){if(r.Update||(r=new e.TemplateError(r)),r.Update(t),!n){var i=r;r=new Error(i.message),r.name=i.name}return r},e.TemplateError=function(t,e,n){var r=this;if(t instanceof Error){r=t,t=t.name+": "+t.message;try{r.name=""}catch(i){r=this}}else Error.captureStackTrace&&Error.captureStackTrace(r);return r.name="Template render error",r.message=t,r.lineno=e,r.colno=n,r.firstUpdate=!0,r.Update=function(t){var e="("+(t||"unknown path")+")";return this.firstUpdate&&(this.lineno&&this.colno?e+=" [Line "+this.lineno+", Column "+this.colno+"]":this.lineno&&(e+=" [Line "+this.lineno+"]")),e+="\n ",this.firstUpdate&&(e+=" "),this.message=e+(this.message||""),this.firstUpdate=!1,this},r},e.TemplateError.prototype=Error.prototype,e.escape=function(t){return t.replace(o,s)},e.isFunction=function(t){return"[object Function]"===r.toString.call(t)},e.isArray=Array.isArray||function(t){return"[object Array]"===r.toString.call(t)},e.isString=function(t){return"[object String]"===r.toString.call(t)},e.isObject=function(t){return"[object Object]"===r.toString.call(t)},e.groupBy=function(t,n){for(var r={},i=e.isFunction(n)?n:function(t){return t[n]},o=0;o<t.length;o++){var s=t[o],u=i(s,o);(r[u]||(r[u]=[])).push(s)}return r},e.toArray=function(t){return Array.prototype.slice.call(t)},e.without=function(t){var n=[];if(!t)return n;for(var r=-1,i=t.length,o=e.toArray(arguments).slice(1);++r<i;)-1===e.indexOf(o,t[r])&&n.push(t[r]);return n},e.extend=function(t,e){for(var n in e)t[n]=e[n];return t},e.repeat=function(t,e){for(var n="",r=0;e>r;r++)n+=t;return n},e.each=function(t,e,r){if(null!=t)if(n.each&&t.each===n.each)t.forEach(e,r);else if(t.length===+t.length)for(var i=0,o=t.length;o>i;i++)e.call(r,t[i],i,t)},e.map=function(t,e){var r=[];if(null==t)return r;if(n.map&&t.map===n.map)return t.map(e);for(var i=0;i<t.length;i++)r[r.length]=e(t[i],i);return t.length===+t.length&&(r.length=t.length),r},e.asyncIter=function(t,e,n){function r(){i++,i<t.length?e(t[i],i,r,n):n()}var i=-1;r()},e.asyncFor=function(t,n,r){function i(){u++;var e=o[u];s>u?n(e,t[e],u,s,i):r()}var o=e.keys(t),s=o.length,u=-1;i()},e.indexOf=Array.prototype.indexOf?function(t,e,n){return Array.prototype.indexOf.call(t,e,n)}:function(t,e,n){var r=this.length>>>0;for(n=+n||0,Math.abs(n)===1/0&&(n=0),0>n&&(n+=r,0>n&&(n=0));r>n;n++)if(t[n]===e)return n;return-1},Array.prototype.map||(Array.prototype.map=function(){throw new Error("map is unimplemented for this js engine")}),e.keys=function(t){if(Object.prototype.keys)return t.keys();var e=[];for(var n in t)t.hasOwnProperty(n)&&e.push(n);return e},e.inOperator=function(t,n){if(e.isArray(n))return-1!==e.indexOf(n,t);if(e.isObject(n))return t in n;if(e.isString(n))return-1!==n.indexOf(t);throw new Error('Cannot use "in" operator to search for "'+t+'" in unexpected types.')}},function(t,e,n){"use strict";function r(t,e,n){s(function(){t(e,n)})}var i,o=n(3),s=n(4),u=n(1),a=n(6),c=n(3),l=n(7),f=n(3),p=n(8),h=n(9),v=n(10),d=p.Frame;f.PrecompiledLoader=n(13);var m=a.extend({init:function(t,e){e=this.opts=e||{},this.opts.dev=!!e.dev,this.opts.autoescape=null!=e.autoescape?e.autoescape:!0,this.opts.throwOnUndefined=!!e.throwOnUndefined,this.opts.trimBlocks=!!e.trimBlocks,this.opts.lstripBlocks=!!e.lstripBlocks,this.loaders=[],t?this.loaders=u.isArray(t)?t:[t]:f.FileSystemLoader?this.loaders=[new f.FileSystemLoader("views")]:f.WebLoader&&(this.loaders=[new f.WebLoader("/views")]),window.nunjucksPrecompiled&&this.loaders.unshift(new f.PrecompiledLoader(window.nunjucksPrecompiled)),this.initCache(),this.globals=h(),this.filters={},this.asyncFilters=[],this.extensions={},this.extensionsList=[];for(var n in l)this.addFilter(n,l[n])},initCache:function(){u.each(this.loaders,function(t){t.cache={},"function"==typeof t.on&&t.on("update",function(e){t.cache[e]=null})})},addExtension:function(t,e){return e._name=t,this.extensions[t]=e,this.extensionsList.push(e),this},removeExtension:function(t){var 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diff --git a/browser/nunjucks.js b/browser/nunjucks.js
index fe7be5e4..7598ab39 100644
--- a/browser/nunjucks.js
+++ b/browser/nunjucks.js
@@ -1,4 +1,4 @@
-/*! Browser bundle of nunjucks 3.0.0  */
+/*! Browser bundle of nunjucks 3.0.1  */
 (function webpackUniversalModuleDefinition(root, factory) {
 	if(typeof exports === 'object' && typeof module === 'object')
 		module.exports = factory();
@@ -53,14 +53,14 @@ return /******/ (function(modules) { // webpackBootstrap
 /************************************************************************/
 /******/ ([
 /* 0 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
 	var lib = __webpack_require__(1);
 	var env = __webpack_require__(2);
-	var Loader = __webpack_require__(15);
-	var loaders = __webpack_require__(14);
+	var Loader = __webpack_require__(16);
+	var loaders = __webpack_require__(15);
 	var precompile = __webpack_require__(3);
 
 	module.exports = {};
@@ -75,11 +75,11 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports.compiler = __webpack_require__(7);
 	module.exports.parser = __webpack_require__(8);
 	module.exports.lexer = __webpack_require__(9);
-	module.exports.runtime = __webpack_require__(12);
+	module.exports.runtime = __webpack_require__(13);
 	module.exports.lib = lib;
 	module.exports.nodes = __webpack_require__(10);
 
-	module.exports.installJinjaCompat = __webpack_require__(21);
+	module.exports.installJinjaCompat = __webpack_require__(22);
 
 	// A single instance of an environment, since this is so commonly used
 
@@ -143,9 +143,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	}
 
 
-/***/ },
+/***/ }),
 /* 1 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	'use strict';
 
@@ -448,9 +448,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 2 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -459,17 +459,17 @@ return /******/ (function(modules) { // webpackBootstrap
 	var lib = __webpack_require__(1);
 	var Obj = __webpack_require__(6);
 	var compiler = __webpack_require__(7);
-	var builtin_filters = __webpack_require__(13);
-	var builtin_loaders = __webpack_require__(14);
-	var runtime = __webpack_require__(12);
-	var globals = __webpack_require__(17);
-	var waterfall = __webpack_require__(18);
+	var builtin_filters = __webpack_require__(14);
+	var builtin_loaders = __webpack_require__(15);
+	var runtime = __webpack_require__(13);
+	var globals = __webpack_require__(18);
+	var waterfall = __webpack_require__(19);
 	var Frame = runtime.Frame;
 	var Template;
 
 	// Unconditionally load in this loader, even if no other ones are
 	// included (possible in the slim browser build)
-	builtin_loaders.PrecompiledLoader = __webpack_require__(16);
+	builtin_loaders.PrecompiledLoader = __webpack_require__(17);
 
 	// If the user is using the async API, *always* call it
 	// asynchronously even if the template was synchronous.
@@ -1047,15 +1047,15 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 3 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	
 
-/***/ },
+/***/ }),
 /* 4 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	"use strict";
 
@@ -1125,9 +1125,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 5 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	/* WEBPACK VAR INJECTION */(function(global) {"use strict";
 
@@ -1207,9 +1207,12 @@ return /******/ (function(modules) { // webpackBootstrap
 
 	// Safari 6 and 6.1 for desktop, iPad, and iPhone are the only browsers that
 	// have WebKitMutationObserver but not un-prefixed MutationObserver.
-	// Must use `global` instead of `window` to work in both frames and web
+	// Must use `global` or `self` instead of `window` to work in both frames and web
 	// workers. `global` is a provision of Browserify, Mr, Mrs, or Mop.
-	var BrowserMutationObserver = global.MutationObserver || global.WebKitMutationObserver;
+
+	/* globals self */
+	var scope = typeof global !== "undefined" ? global : self;
+	var BrowserMutationObserver = scope.MutationObserver || scope.WebKitMutationObserver;
 
 	// MutationObservers are desirable because they have high priority and work
 	// reliably everywhere they are implemented.
@@ -1352,9 +1355,9 @@ return /******/ (function(modules) { // webpackBootstrap
 
 	/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))
 
-/***/ },
+/***/ }),
 /* 6 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
 	'use strict';
 
@@ -1422,19 +1425,19 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = extend(Object, 'Object', {});
 
 
-/***/ },
+/***/ }),
 /* 7 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
 	var lib = __webpack_require__(1);
 	var parser = __webpack_require__(8);
-	var transformer = __webpack_require__(11);
+	var transformer = __webpack_require__(12);
 	var nodes = __webpack_require__(10);
 	// jshint -W079
 	var Object = __webpack_require__(6);
-	var Frame = __webpack_require__(12).Frame;
+	var Frame = __webpack_require__(13).Frame;
 
 	// These are all the same for now, but shouldn't be passed straight
 	// through
@@ -2223,10 +2226,11 @@ return /******/ (function(modules) { // webpackBootstrap
 	        this._compileAsyncLoop(node, frame, true);
 	    },
 
-	    _compileMacro: function(node) {
+	    _compileMacro: function(node, frame) {
 	        var args = [];
 	        var kwargs = null;
 	        var funcId = 'macro_' + this.tmpid();
+	        var keepFrame = (frame !== undefined);
 
 	        // Type check the definition of the args
 	        lib.each(node.args.children, function(arg, i) {
@@ -2252,14 +2256,18 @@ return /******/ (function(modules) { // webpackBootstrap
 	        // arguments so support setting positional args with keywords
 	        // args and passing keyword args as positional args
 	        // (essentially default values). See runtime.js.
-	        var frame = new Frame();
+	        if (keepFrame) {
+	            frame = frame.push(true);
+	        } else {
+	            frame = new Frame();
+	        }
 	        this.emitLines(
 	            'var ' + funcId + ' = runtime.makeMacro(',
 	            '[' + argNames.join(', ') + '], ',
 	            '[' + kwargNames.join(', ') + '], ',
 	            'function (' + realNames.join(', ') + ') {',
 	            'var callerFrame = frame;',
-	            'frame = new runtime.Frame();',
+	            'frame = ' + ((keepFrame) ? 'frame.push(true);' : 'new runtime.Frame();'),
 	            'kwargs = kwargs || {};',
 	            'if (kwargs.hasOwnProperty("caller")) {',
 	            'frame.set("caller", kwargs.caller); }'
@@ -2293,7 +2301,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	          this.compile(node.body, frame);
 	        });
 
-	        this.emitLine('frame = callerFrame;');
+	        this.emitLine('frame = ' + ((keepFrame) ? 'frame.pop();' : 'callerFrame;'));
 	        this.emitLine('return new runtime.SafeString(' + bufferId + ');');
 	        this.emitLine('});');
 	        this.popBufferId();
@@ -2302,7 +2310,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	    },
 
 	    compileMacro: function(node, frame) {
-	        var funcId = this._compileMacro(node, frame);
+	        var funcId = this._compileMacro(node);
 
 	        // Expose the macro to the templates
 	        var name = node.name.value;
@@ -2487,6 +2495,10 @@ return /******/ (function(modules) { // webpackBootstrap
 	    },
 
 	    compileCapture: function(node, frame) {
+	        // we need to temporarily override the current buffer id as 'output'
+	        // so the set block writes to the capture output instead of the buffer
+	        var buffer = this.buffer;
+	        this.buffer = 'output';
 	        this.emitLine('(function() {');
 	        this.emitLine('var output = "";');
 	        this.withScopedSyntax(function () {
@@ -2494,6 +2506,8 @@ return /******/ (function(modules) { // webpackBootstrap
 	        });
 	        this.emitLine('return output;');
 	        this.emitLine('})()');
+	        // and of course, revert back to the old buffer id
+	        this.buffer = buffer;
 	    },
 
 	    compileOutput: function(node, frame) {
@@ -2624,9 +2638,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 8 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -3598,10 +3612,6 @@ return /******/ (function(modules) { // webpackBootstrap
 	        }
 	        else if(tok.type === lexer.TOKEN_SYMBOL) {
 	            node = new nodes.Symbol(tok.lineno, tok.colno, tok.value);
-
-	            if(!noPostfix) {
-	                node = this.parsePostfix(node);
-	            }
 	        }
 	        else {
 	            // See if it's an aggregate type, we need to push the
@@ -3610,6 +3620,10 @@ return /******/ (function(modules) { // webpackBootstrap
 	            node = this.parseAggregate();
 	        }
 
+	        if(!noPostfix) {
+	            node = this.parsePostfix(node);
+	        }
+
 	        if(node) {
 	            return node;
 	        }
@@ -3924,13 +3938,14 @@ return /******/ (function(modules) { // webpackBootstrap
 	            p.extensions = extensions;
 	        }
 	        return p.parseAsRoot();
-	    }
+	    },
+	    Parser: Parser
 	};
 
 
-/***/ },
+/***/ }),
 /* 9 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -4456,9 +4471,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
+/***/ }),
 /* 10 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports, __webpack_require__) {
 
 	/* WEBPACK VAR INJECTION */(function(process) {'use strict';
 
@@ -4764,11 +4779,17 @@ return /******/ (function(modules) { // webpackBootstrap
 	    printNodes: printNodes
 	};
 
-	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(3)))
+	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(11)))
 
-/***/ },
+/***/ }),
 /* 11 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ (function(module, exports) {
+
+	
+
+/***/ }),
+/* 12 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -5011,9 +5032,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
-/* 12 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 13 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -5379,14 +5400,14 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
-/* 13 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 14 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
 	var lib = __webpack_require__(1);
-	var r = __webpack_require__(12);
+	var r = __webpack_require__(13);
 
 	function normalize(value, defaultValue) {
 	    if(value === null || value === undefined || value === false) {
@@ -5396,9 +5417,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	}
 
 	var filters = {
-	    abs: function(n) {
-	        return Math.abs(n);
-	    },
+	    abs: Math.abs,
 
 	    batch: function(arr, linecount, fill_with) {
 	        var i;
@@ -5978,14 +5997,14 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = filters;
 
 
-/***/ },
-/* 14 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 15 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
-	var Loader = __webpack_require__(15);
-	var PrecompiledLoader = __webpack_require__(16);
+	var Loader = __webpack_require__(16);
+	var PrecompiledLoader = __webpack_require__(17);
 
 	var WebLoader = Loader.extend({
 	    init: function(baseURL, opts) {
@@ -6080,9 +6099,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	};
 
 
-/***/ },
-/* 15 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 16 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
@@ -6119,13 +6138,13 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = Loader;
 
 
-/***/ },
-/* 16 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 17 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	'use strict';
 
-	var Loader = __webpack_require__(15);
+	var Loader = __webpack_require__(16);
 
 	var PrecompiledLoader = Loader.extend({
 	    init: function(compiledTemplates) {
@@ -6147,9 +6166,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = PrecompiledLoader;
 
 
-/***/ },
-/* 17 */
-/***/ function(module, exports) {
+/***/ }),
+/* 18 */
+/***/ (function(module, exports) {
 
 	'use strict';
 
@@ -6232,9 +6251,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	module.exports = globals;
 
 
-/***/ },
-/* 18 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 19 */
+/***/ (function(module, exports, __webpack_require__) {
 
 	var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/* WEBPACK VAR INJECTION */(function(setImmediate, process) {// MIT license (by Elan Shanker).
 	(function(globals) {
@@ -6320,17 +6339,13 @@ return /******/ (function(modules) { // webpackBootstrap
 	  }
 	})(this);
 
-	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(19).setImmediate, __webpack_require__(3)))
+	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(20).setImmediate, __webpack_require__(11)))
 
-/***/ },
-/* 19 */
-/***/ function(module, exports, __webpack_require__) {
+/***/ }),
+/* 20 */
+/***/ (function(module, exports, __webpack_require__) {
 
-	/* WEBPACK VAR INJECTION */(function(setImmediate, clearImmediate) {var nextTick = __webpack_require__(20).nextTick;
 	var apply = Function.prototype.apply;
-	var slice = Array.prototype.slice;
-	var immediateIds = {};
-	var nextImmediateId = 0;
 
 	// DOM APIs, for completeness
 
@@ -6341,7 +6356,11 @@ return /******/ (function(modules) { // webpackBootstrap
 	  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
 	};
 	exports.clearTimeout =
-	exports.clearInterval = function(timeout) { timeout.close(); };
+	exports.clearInterval = function(timeout) {
+	  if (timeout) {
+	    timeout.close();
+	  }
+	};
 
 	function Timeout(id, clearFn) {
 	  this._id = id;
@@ -6375,298 +6394,516 @@ return /******/ (function(modules) { // webpackBootstrap
 	  }
 	};
 
-	// That's not how node.js implements it but the exposed api is the same.
-	exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
-	  var id = nextImmediateId++;
-	  var args = arguments.length < 2 ? false : slice.call(arguments, 1);
-
-	  immediateIds[id] = true;
-
-	  nextTick(function onNextTick() {
-	    if (immediateIds[id]) {
-	      // fn.call() is faster so we optimize for the common use-case
-	      // @see http://jsperf.com/call-apply-segu
-	      if (args) {
-	        fn.apply(null, args);
-	      } else {
-	        fn.call(null);
-	      }
-	      // Prevent ids from leaking
-	      exports.clearImmediate(id);
-	    }
-	  });
+	// setimmediate attaches itself to the global object
+	__webpack_require__(21);
+	exports.setImmediate = setImmediate;
+	exports.clearImmediate = clearImmediate;
 
-	  return id;
-	};
 
-	exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
-	  delete immediateIds[id];
-	};
-	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(19).setImmediate, __webpack_require__(19).clearImmediate))
+/***/ }),
+/* 21 */
+/***/ (function(module, exports, __webpack_require__) {
 
-/***/ },
-/* 20 */
-/***/ function(module, exports) {
+	/* WEBPACK VAR INJECTION */(function(global, process) {(function (global, undefined) {
+	    "use strict";
 
-	// shim for using process in browser
+	    if (global.setImmediate) {
+	        return;
+	    }
 
-	var process = module.exports = {};
-	var queue = [];
-	var draining = false;
-	var currentQueue;
-	var queueIndex = -1;
-
-	function cleanUpNextTick() {
-	    draining = false;
-	    if (currentQueue.length) {
-	        queue = currentQueue.concat(queue);
-	    } else {
-	        queueIndex = -1;
+	    var nextHandle = 1; // Spec says greater than zero
+	    var tasksByHandle = {};
+	    var currentlyRunningATask = false;
+	    var doc = global.document;
+	    var registerImmediate;
+
+	    function setImmediate(callback) {
+	      // Callback can either be a function or a string
+	      if (typeof callback !== "function") {
+	        callback = new Function("" + callback);
+	      }
+	      // Copy function arguments
+	      var args = new Array(arguments.length - 1);
+	      for (var i = 0; i < args.length; i++) {
+	          args[i] = arguments[i + 1];
+	      }
+	      // Store and register the task
+	      var task = { callback: callback, args: args };
+	      tasksByHandle[nextHandle] = task;
+	      registerImmediate(nextHandle);
+	      return nextHandle++;
 	    }
-	    if (queue.length) {
-	        drainQueue();
+
+	    function clearImmediate(handle) {
+	        delete tasksByHandle[handle];
 	    }
-	}
 
-	function drainQueue() {
-	    if (draining) {
-	        return;
+	    function run(task) {
+	        var callback = task.callback;
+	        var args = task.args;
+	        switch (args.length) {
+	        case 0:
+	            callback();
+	            break;
+	        case 1:
+	            callback(args[0]);
+	            break;
+	        case 2:
+	            callback(args[0], args[1]);
+	            break;
+	        case 3:
+	            callback(args[0], args[1], args[2]);
+	            break;
+	        default:
+	            callback.apply(undefined, args);
+	            break;
+	        }
 	    }
-	    var timeout = setTimeout(cleanUpNextTick);
-	    draining = true;
 
-	    var len = queue.length;
-	    while(len) {
-	        currentQueue = queue;
-	        queue = [];
-	        while (++queueIndex < len) {
-	            if (currentQueue) {
-	                currentQueue[queueIndex].run();
+	    function runIfPresent(handle) {
+	        // From the spec: "Wait until any invocations of this algorithm started before this one have completed."
+	        // So if we're currently running a task, we'll need to delay this invocation.
+	        if (currentlyRunningATask) {
+	            // Delay by doing a setTimeout. setImmediate was tried instead, but in Firefox 7 it generated a
+	            // "too much recursion" error.
+	            setTimeout(runIfPresent, 0, handle);
+	        } else {
+	            var task = tasksByHandle[handle];
+	            if (task) {
+	                currentlyRunningATask = true;
+	                try {
+	                    run(task);
+	                } finally {
+	                    clearImmediate(handle);
+	                    currentlyRunningATask = false;
+	                }
 	            }
 	        }
-	        queueIndex = -1;
-	        len = queue.length;
 	    }
-	    currentQueue = null;
-	    draining = false;
-	    clearTimeout(timeout);
-	}
 
-	process.nextTick = function (fun) {
-	    var args = new Array(arguments.length - 1);
-	    if (arguments.length > 1) {
-	        for (var i = 1; i < arguments.length; i++) {
-	            args[i - 1] = arguments[i];
+	    function installNextTickImplementation() {
+	        registerImmediate = function(handle) {
+	            process.nextTick(function () { runIfPresent(handle); });
+	        };
+	    }
+
+	    function canUsePostMessage() {
+	        // The test against `importScripts` prevents this implementation from being installed inside a web worker,
+	        // where `global.postMessage` means something completely different and can't be used for this purpose.
+	        if (global.postMessage && !global.importScripts) {
+	            var postMessageIsAsynchronous = true;
+	            var oldOnMessage = global.onmessage;
+	            global.onmessage = function() {
+	                postMessageIsAsynchronous = false;
+	            };
+	            global.postMessage("", "*");
+	            global.onmessage = oldOnMessage;
+	            return postMessageIsAsynchronous;
 	        }
 	    }
-	    queue.push(new Item(fun, args));
-	    if (queue.length === 1 && !draining) {
-	        setTimeout(drainQueue, 0);
+
+	    function installPostMessageImplementation() {
+	        // Installs an event handler on `global` for the `message` event: see
+	        // * https://developer.mozilla.org/en/DOM/window.postMessage
+	        // * http://www.whatwg.org/specs/web-apps/current-work/multipage/comms.html#crossDocumentMessages
+
+	        var messagePrefix = "setImmediate$" + Math.random() + "$";
+	        var onGlobalMessage = function(event) {
+	            if (event.source === global &&
+	                typeof event.data === "string" &&
+	                event.data.indexOf(messagePrefix) === 0) {
+	                runIfPresent(+event.data.slice(messagePrefix.length));
+	            }
+	        };
+
+	        if (global.addEventListener) {
+	            global.addEventListener("message", onGlobalMessage, false);
+	        } else {
+	            global.attachEvent("onmessage", onGlobalMessage);
+	        }
+
+	        registerImmediate = function(handle) {
+	            global.postMessage(messagePrefix + handle, "*");
+	        };
 	    }
-	};
 
-	// v8 likes predictible objects
-	function Item(fun, array) {
-	    this.fun = fun;
-	    this.array = array;
-	}
-	Item.prototype.run = function () {
-	    this.fun.apply(null, this.array);
-	};
-	process.title = 'browser';
-	process.browser = true;
-	process.env = {};
-	process.argv = [];
-	process.version = ''; // empty string to avoid regexp issues
-	process.versions = {};
-
-	function noop() {}
-
-	process.on = noop;
-	process.addListener = noop;
-	process.once = noop;
-	process.off = noop;
-	process.removeListener = noop;
-	process.removeAllListeners = noop;
-	process.emit = noop;
-
-	process.binding = function (name) {
-	    throw new Error('process.binding is not supported');
-	};
+	    function installMessageChannelImplementation() {
+	        var channel = new MessageChannel();
+	        channel.port1.onmessage = function(event) {
+	            var handle = event.data;
+	            runIfPresent(handle);
+	        };
 
-	process.cwd = function () { return '/' };
-	process.chdir = function (dir) {
-	    throw new Error('process.chdir is not supported');
-	};
-	process.umask = function() { return 0; };
+	        registerImmediate = function(handle) {
+	            channel.port2.postMessage(handle);
+	        };
+	    }
 
+	    function installReadyStateChangeImplementation() {
+	        var html = doc.documentElement;
+	        registerImmediate = function(handle) {
+	            // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
+	            // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
+	            var script = doc.createElement("script");
+	            script.onreadystatechange = function () {
+	                runIfPresent(handle);
+	                script.onreadystatechange = null;
+	                html.removeChild(script);
+	                script = null;
+	            };
+	            html.appendChild(script);
+	        };
+	    }
 
-/***/ },
-/* 21 */
-/***/ function(module, exports) {
+	    function installSetTimeoutImplementation() {
+	        registerImmediate = function(handle) {
+	            setTimeout(runIfPresent, 0, handle);
+	        };
+	    }
 
-	function installCompat() {
-	  'use strict';
+	    // If supported, we should attach to the prototype of global, since that is where setTimeout et al. live.
+	    var attachTo = Object.getPrototypeOf && Object.getPrototypeOf(global);
+	    attachTo = attachTo && attachTo.setTimeout ? attachTo : global;
 
-	  // This must be called like `nunjucks.installCompat` so that `this`
-	  // references the nunjucks instance
-	  var runtime = this.runtime; // jshint ignore:line
-	  var lib = this.lib; // jshint ignore:line
-
-	  var orig_contextOrFrameLookup = runtime.contextOrFrameLookup;
-	  runtime.contextOrFrameLookup = function(context, frame, key) {
-	    var val = orig_contextOrFrameLookup.apply(this, arguments);
-	    if (val === undefined) {
-	      switch (key) {
-	      case 'True':
-	        return true;
-	      case 'False':
-	        return false;
-	      case 'None':
-	        return null;
-	      }
+	    // Don't get fooled by e.g. browserify environments.
+	    if ({}.toString.call(global.process) === "[object process]") {
+	        // For Node.js before 0.9
+	        installNextTickImplementation();
+
+	    } else if (canUsePostMessage()) {
+	        // For non-IE10 modern browsers
+	        installPostMessageImplementation();
+
+	    } else if (global.MessageChannel) {
+	        // For web workers, where supported
+	        installMessageChannelImplementation();
+
+	    } else if (doc && "onreadystatechange" in doc.createElement("script")) {
+	        // For IE 6–8
+	        installReadyStateChangeImplementation();
+
+	    } else {
+	        // For older browsers
+	        installSetTimeoutImplementation();
 	    }
 
-	    return val;
-	  };
+	    attachTo.setImmediate = setImmediate;
+	    attachTo.clearImmediate = clearImmediate;
+	}(typeof self === "undefined" ? typeof global === "undefined" ? this : global : self));
 
-	  var orig_memberLookup = runtime.memberLookup;
-	  var ARRAY_MEMBERS = {
-	    pop: function(index) {
-	      if (index === undefined) {
-	        return this.pop();
-	      }
-	      if (index >= this.length || index < 0) {
-	        throw new Error('KeyError');
-	      }
-	      return this.splice(index, 1);
-	    },
-	    append: function(element) {
-	        return this.push(element);
-	    },
-	    remove: function(element) {
-	      for (var i = 0; i < this.length; i++) {
-	        if (this[i] === element) {
-	          return this.splice(i, 1);
+	/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }()), __webpack_require__(11)))
+
+/***/ }),
+/* 22 */
+/***/ (function(module, exports) {
+
+	function installCompat() {
+	    'use strict';
+
+	    // This must be called like `nunjucks.installCompat` so that `this`
+	    // references the nunjucks instance
+	    var runtime = this.runtime; // jshint ignore:line
+	    var lib = this.lib; // jshint ignore:line
+	    var Compiler = this.compiler.Compiler; // jshint ignore:line
+	    var Parser = this.parser.Parser; // jshint ignore:line
+	    var nodes = this.nodes; // jshint ignore:line
+	    var lexer = this.lexer; // jshint ignore:line
+
+	    var orig_contextOrFrameLookup = runtime.contextOrFrameLookup;
+	    var orig_Compiler_assertType = Compiler.prototype.assertType;
+	    var orig_Parser_parseAggregate = Parser.prototype.parseAggregate;
+	    var orig_memberLookup = runtime.memberLookup;
+
+	    function uninstall() {
+	        runtime.contextOrFrameLookup = orig_contextOrFrameLookup;
+	        Compiler.prototype.assertType = orig_Compiler_assertType;
+	        Parser.prototype.parseAggregate = orig_Parser_parseAggregate;
+	        runtime.memberLookup = orig_memberLookup;
+	    }
+
+	    runtime.contextOrFrameLookup = function(context, frame, key) {
+	        var val = orig_contextOrFrameLookup.apply(this, arguments);
+	        if (val === undefined) {
+	            switch (key) {
+	            case 'True':
+	                return true;
+	            case 'False':
+	                return false;
+	            case 'None':
+	                return null;
+	            }
 	        }
-	      }
-	      throw new Error('ValueError');
-	    },
-	    count: function(element) {
-	      var count = 0;
-	      for (var i = 0; i < this.length; i++) {
-	        if (this[i] === element) {
-	          count++;
+
+	        return val;
+	    };
+
+	    var Slice = nodes.Node.extend('Slice', {
+	        fields: ['start', 'stop', 'step'],
+	        init: function(lineno, colno, start, stop, step) {
+	            start = start || new nodes.Literal(lineno, colno, null);
+	            stop = stop || new nodes.Literal(lineno, colno, null);
+	            step = step || new nodes.Literal(lineno, colno, 1);
+	            this.parent(lineno, colno, start, stop, step);
 	        }
-	      }
-	      return count;
-	    },
-	    index: function(element) {
-	      var i;
-	      if ((i = this.indexOf(element)) === -1) {
-	        throw new Error('ValueError');
-	      }
-	      return i;
-	    },
-	    find: function(element) {
-	      return this.indexOf(element);
-	    },
-	    insert: function(index, elem) {
-	      return this.splice(index, 0, elem);
-	    }
-	  };
-	  var OBJECT_MEMBERS = {
-	    items: function() {
-	      var ret = [];
-	      for(var k in this) {
-	        ret.push([k, this[k]]);
-	      }
-	      return ret;
-	    },
-	    values: function() {
-	      var ret = [];
-	      for(var k in this) {
-	        ret.push(this[k]);
-	      }
-	      return ret;
-	    },
-	    keys: function() {
-	      var ret = [];
-	      for(var k in this) {
-	        ret.push(k);
-	      }
-	      return ret;
-	    },
-	    get: function(key, def) {
-	      var output = this[key];
-	      if (output === undefined) {
-	        output = def;
-	      }
-	      return output;
-	    },
-	    has_key: function(key) {
-	      return this.hasOwnProperty(key);
-	    },
-	    pop: function(key, def) {
-	      var output = this[key];
-	      if (output === undefined && def !== undefined) {
-	        output = def;
-	      } else if (output === undefined) {
-	        throw new Error('KeyError');
-	      } else {
-	        delete this[key];
-	      }
-	      return output;
-	    },
-	    popitem: function() {
-	      for (var k in this) {
-	        // Return the first object pair.
-	        var val = this[k];
-	        delete this[k];
-	        return [k, val];
-	      }
-	      throw new Error('KeyError');
-	    },
-	    setdefault: function(key, def) {
-	      if (key in this) {
-	        return this[key];
-	      }
-	      if (def === undefined) {
-	        def = null;
-	      }
-	      return this[key] = def;
-	    },
-	    update: function(kwargs) {
-	      for (var k in kwargs) {
-	        this[k] = kwargs[k];
-	      }
-	      return null;  // Always returns None
-	    }
-	  };
-	  OBJECT_MEMBERS.iteritems = OBJECT_MEMBERS.items;
-	  OBJECT_MEMBERS.itervalues = OBJECT_MEMBERS.values;
-	  OBJECT_MEMBERS.iterkeys = OBJECT_MEMBERS.keys;
-	  runtime.memberLookup = function(obj, val, autoescape) { // jshint ignore:line
-	    obj = obj || {};
+	    });
 
-	    // If the object is an object, return any of the methods that Python would
-	    // otherwise provide.
-	    if (lib.isArray(obj) && ARRAY_MEMBERS.hasOwnProperty(val)) {
-	      return function() {return ARRAY_MEMBERS[val].apply(obj, arguments);};
+	    Compiler.prototype.assertType = function(node) {
+	        if (node instanceof Slice) {
+	            return;
+	        }
+	        return orig_Compiler_assertType.apply(this, arguments);
+	    };
+	    Compiler.prototype.compileSlice = function(node, frame) {
+	        this.emit('(');
+	        this._compileExpression(node.start, frame);
+	        this.emit('),(');
+	        this._compileExpression(node.stop, frame);
+	        this.emit('),(');
+	        this._compileExpression(node.step, frame);
+	        this.emit(')');
+	    };
+
+	    function getTokensState(tokens) {
+	        return {
+	            index: tokens.index,
+	            lineno: tokens.lineno,
+	            colno: tokens.colno
+	        };
 	    }
 
-	    if (lib.isObject(obj) && OBJECT_MEMBERS.hasOwnProperty(val)) {
-	      return function() {return OBJECT_MEMBERS[val].apply(obj, arguments);};
+	    Parser.prototype.parseAggregate = function() {
+	        var self = this;
+	        var origState = getTokensState(this.tokens);
+	        // Set back one accounting for opening bracket/parens
+	        origState.colno--;
+	        origState.index--;
+	        try {
+	            return orig_Parser_parseAggregate.apply(this);
+	        } catch(e) {
+	            var errState = getTokensState(this.tokens);
+	            var rethrow = function() {
+	                lib.extend(self.tokens, errState);
+	                return e;
+	            };
+
+	            // Reset to state before original parseAggregate called
+	            lib.extend(this.tokens, origState);
+	            this.peeked = false;
+
+	            var tok = this.peekToken();
+	            if (tok.type !== lexer.TOKEN_LEFT_BRACKET) {
+	                throw rethrow();
+	            } else {
+	                this.nextToken();
+	            }
+
+	            var node = new Slice(tok.lineno, tok.colno);
+
+	            // If we don't encounter a colon while parsing, this is not a slice,
+	            // so re-raise the original exception.
+	            var isSlice = false;
+
+	            for (var i = 0; i <= node.fields.length; i++) {
+	                if (this.skip(lexer.TOKEN_RIGHT_BRACKET)) {
+	                    break;
+	                }
+	                if (i === node.fields.length) {
+	                    if (isSlice) {
+	                        this.fail('parseSlice: too many slice components', tok.lineno, tok.colno);
+	                    } else {
+	                        break;
+	                    }
+	                }
+	                if (this.skip(lexer.TOKEN_COLON)) {
+	                    isSlice = true;
+	                } else {
+	                    var field = node.fields[i];
+	                    node[field] = this.parseExpression();
+	                    isSlice = this.skip(lexer.TOKEN_COLON) || isSlice;
+	                }
+	            }
+	            if (!isSlice) {
+	                throw rethrow();
+	            }
+	            return new nodes.Array(tok.lineno, tok.colno, [node]);
+	        }
+	    };
+
+	    function sliceLookup(obj, start, stop, step) {
+	        obj = obj || [];
+	        if (start === null) {
+	            start = (step < 0) ? (obj.length - 1) : 0;
+	        }
+	        if (stop === null) {
+	            stop = (step < 0) ? -1 : obj.length;
+	        } else {
+	            if (stop < 0) {
+	                stop += obj.length;
+	            }
+	        }
+
+	        if (start < 0) {
+	            start += obj.length;
+	        }
+
+	        var results = [];
+
+	        for (var i = start; ; i += step) {
+	            if (i < 0 || i > obj.length) {
+	                break;
+	            }
+	            if (step > 0 && i >= stop) {
+	                break;
+	            }
+	            if (step < 0 && i <= stop) {
+	                break;
+	            }
+	            results.push(runtime.memberLookup(obj, i));
+	        }
+	        return results;
 	    }
 
-	    return orig_memberLookup.apply(this, arguments);
-	  };
+	    var ARRAY_MEMBERS = {
+	        pop: function(index) {
+	            if (index === undefined) {
+	                return this.pop();
+	            }
+	            if (index >= this.length || index < 0) {
+	                throw new Error('KeyError');
+	            }
+	            return this.splice(index, 1);
+	        },
+	        append: function(element) {
+	                return this.push(element);
+	        },
+	        remove: function(element) {
+	            for (var i = 0; i < this.length; i++) {
+	                if (this[i] === element) {
+	                    return this.splice(i, 1);
+	                }
+	            }
+	            throw new Error('ValueError');
+	        },
+	        count: function(element) {
+	            var count = 0;
+	            for (var i = 0; i < this.length; i++) {
+	                if (this[i] === element) {
+	                    count++;
+	                }
+	            }
+	            return count;
+	        },
+	        index: function(element) {
+	            var i;
+	            if ((i = this.indexOf(element)) === -1) {
+	                throw new Error('ValueError');
+	            }
+	            return i;
+	        },
+	        find: function(element) {
+	            return this.indexOf(element);
+	        },
+	        insert: function(index, elem) {
+	            return this.splice(index, 0, elem);
+	        }
+	    };
+	    var OBJECT_MEMBERS = {
+	        items: function() {
+	            var ret = [];
+	            for(var k in this) {
+	                ret.push([k, this[k]]);
+	            }
+	            return ret;
+	        },
+	        values: function() {
+	            var ret = [];
+	            for(var k in this) {
+	                ret.push(this[k]);
+	            }
+	            return ret;
+	        },
+	        keys: function() {
+	            var ret = [];
+	            for(var k in this) {
+	                ret.push(k);
+	            }
+	            return ret;
+	        },
+	        get: function(key, def) {
+	            var output = this[key];
+	            if (output === undefined) {
+	                output = def;
+	            }
+	            return output;
+	        },
+	        has_key: function(key) {
+	            return this.hasOwnProperty(key);
+	        },
+	        pop: function(key, def) {
+	            var output = this[key];
+	            if (output === undefined && def !== undefined) {
+	                output = def;
+	            } else if (output === undefined) {
+	                throw new Error('KeyError');
+	            } else {
+	                delete this[key];
+	            }
+	            return output;
+	        },
+	        popitem: function() {
+	            for (var k in this) {
+	                // Return the first object pair.
+	                var val = this[k];
+	                delete this[k];
+	                return [k, val];
+	            }
+	            throw new Error('KeyError');
+	        },
+	        setdefault: function(key, def) {
+	            if (key in this) {
+	                return this[key];
+	            }
+	            if (def === undefined) {
+	                def = null;
+	            }
+	            return this[key] = def;
+	        },
+	        update: function(kwargs) {
+	            for (var k in kwargs) {
+	                this[k] = kwargs[k];
+	            }
+	            return null;    // Always returns None
+	        }
+	    };
+	    OBJECT_MEMBERS.iteritems = OBJECT_MEMBERS.items;
+	    OBJECT_MEMBERS.itervalues = OBJECT_MEMBERS.values;
+	    OBJECT_MEMBERS.iterkeys = OBJECT_MEMBERS.keys;
+	    runtime.memberLookup = function(obj, val, autoescape) { // jshint ignore:line
+	        if (arguments.length === 4) {
+	            return sliceLookup.apply(this, arguments);
+	        }
+	        obj = obj || {};
+
+	        // If the object is an object, return any of the methods that Python would
+	        // otherwise provide.
+	        if (lib.isArray(obj) && ARRAY_MEMBERS.hasOwnProperty(val)) {
+	            return function() {return ARRAY_MEMBERS[val].apply(obj, arguments);};
+	        }
+
+	        if (lib.isObject(obj) && OBJECT_MEMBERS.hasOwnProperty(val)) {
+	            return function() {return OBJECT_MEMBERS[val].apply(obj, arguments);};
+	        }
+
+	        return orig_memberLookup.apply(this, arguments);
+	    };
+
+	    return uninstall;
 	}
 
 	module.exports = installCompat;
 
 
-/***/ }
+/***/ })
 /******/ ])
 });
 ;
\ No newline at end of file
diff --git a/browser/nunjucks.min.js b/browser/nunjucks.min.js
index 7074a8c3..2af9b3c4 100644
--- a/browser/nunjucks.min.js
+++ b/browser/nunjucks.min.js
@@ -1,4 +1,4 @@
-/*! Browser bundle of nunjucks 3.0.0  */
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.nunjucks=t():e.nunjucks=t()}(this,function(){return function(e){function t(i){if(n[i])return n[i].exports;var r=n[i]={exports:{},id:i,loaded:!1};return e[i].call(r.exports,r,r.exports,t),r.loaded=!0,r.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){"use strict";var i=n(1),r=n(2),s=n(15),o=n(14),a=n(3);e.exports={},e.exports.Environment=r.Environment,e.exports.Template=r.Template,e.exports.Loader=s,e.exports.FileSystemLoader=o.FileSystemLoader,e.exports.PrecompiledLoader=o.PrecompiledLoader,e.exports.WebLoader=o.WebLoader,e.exports.compiler=n(7),e.exports.parser=n(8),e.exports.lexer=n(9),e.exports.runtime=n(12),e.exports.lib=i,e.exports.nodes=n(10),e.exports.installJinjaCompat=n(21);var l;e.exports.configure=function(e,t){t=t||{},i.isObject(e)&&(t=e,e=null);var n;return o.FileSystemLoader?n=new o.FileSystemLoader(e,{watch:t.watch,noCache:t.noCache}):o.WebLoader&&(n=new o.WebLoader(e,{useCache:t.web&&t.web.useCache,async:t.web&&t.web.async})),l=new r.Environment(n,t),t&&t.express&&l.express(t.express),l},e.exports.compile=function(t,n,i,r){return l||e.exports.configure(),new e.exports.Template(t,n,i,r)},e.exports.render=function(t,n,i){return l||e.exports.configure(),l.render(t,n,i)},e.exports.renderString=function(t,n,i){return l||e.exports.configure(),l.renderString(t,n,i)},a&&(e.exports.precompile=a.precompile,e.exports.precompileString=a.precompileString)},function(e,t){"use strict";var n=Array.prototype,i=Object.prototype,r={"&":"&amp;",'"':"&quot;","'":"&#39;","<":"&lt;",">":"&gt;"},s=/[&"'<>]/g,o=function(e){return r[e]},t=e.exports={};t.prettifyError=function(e,n,i){if(i.Update||(i=new t.TemplateError(i)),i.Update(e),!n){var r=i;i=new Error(r.message),i.name=r.name}return i},t.TemplateError=function(e,t,n){var i=this;if(e instanceof Error){i=e,e=e.name+": "+e.message;try{i.name=""}catch(r){i=this}}else Error.captureStackTrace&&Error.captureStackTrace(i);return i.name="Template render error",i.message=e,i.lineno=t,i.colno=n,i.firstUpdate=!0,i.Update=function(e){var t="("+(e||"unknown path")+")";return this.firstUpdate&&(this.lineno&&this.colno?t+=" [Line "+this.lineno+", Column "+this.colno+"]":this.lineno&&(t+=" [Line "+this.lineno+"]")),t+="\n ",this.firstUpdate&&(t+=" "),this.message=t+(this.message||""),this.firstUpdate=!1,this},i},t.TemplateError.prototype=Error.prototype,t.escape=function(e){return e.replace(s,o)},t.isFunction=function(e){return"[object Function]"===i.toString.call(e)},t.isArray=Array.isArray||function(e){return"[object Array]"===i.toString.call(e)},t.isString=function(e){return"[object String]"===i.toString.call(e)},t.isObject=function(e){return"[object Object]"===i.toString.call(e)},t.groupBy=function(e,n){for(var i={},r=t.isFunction(n)?n:function(e){return e[n]},s=0;s<e.length;s++){var 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n=this.peekToken();switch(n&&n.value){case"elseif":case"elif":e.else_=this.parseIf();break;case"else":this.advanceAfterBlockEnd(),e.else_=this.parseUntilBlocks("endif"),this.advanceAfterBlockEnd();break;case"endif":e.else_=null,this.advanceAfterBlockEnd();break;default:this.fail("parseIf: expected elif, else, or endif, got end of file")}return e},parseSet:function(){var e=this.peekToken();this.skipSymbol("set")||this.fail("parseSet: expected set",e.lineno,e.colno);for(var t,n=new r.Set(e.lineno,e.colno,[]);(t=this.parsePrimary())&&(n.targets.push(t),this.skip(i.TOKEN_COMMA)););return this.skipValue(i.TOKEN_OPERATOR,"=")?(n.value=this.parseExpression(),this.advanceAfterBlockEnd(e.value)):this.skip(i.TOKEN_BLOCK_END)?(n.body=new r.Capture(e.lineno,e.colno,this.parseUntilBlocks("endset")),n.value=null,this.advanceAfterBlockEnd()):this.fail("parseSet: expected = or block end in set tag",e.lineno,e.colno),n},parseStatement:function(){var e,t=this.peekToken();if(t.type!==i.TOKEN_SYMBOL&&this.fail("tag name expected",t.lineno,t.colno),this.breakOnBlocks&&-1!==o.indexOf(this.breakOnBlocks,t.value))return null;switch(t.value){case"raw":return this.parseRaw();case"verbatim":return this.parseRaw("verbatim");case"if":case"ifAsync":return this.parseIf();case"for":case"asyncEach":case"asyncAll":return this.parseFor();case"block":return this.parseBlock();case"extends":return this.parseExtends();case"include":return this.parseInclude();case"set":return this.parseSet();case"macro":return this.parseMacro();case"call":return this.parseCall();case"import":return this.parseImport();case"from":return this.parseFrom();case"filter":return this.parseFilterStatement();default:if(this.extensions.length)for(var n=0;n<this.extensions.length;n++){var s=this.extensions[n];if(-1!==o.indexOf(s.tags||[],t.value))return s.parse(this,r,i)}this.fail("unknown block tag: "+t.value,t.lineno,t.colno)}return e},parseRaw:function(e){e=e||"raw";for(var 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e=this.parseInlineIf();return e},parseInlineIf:function(){var e=this.parseOr();if(this.skipSymbol("if")){var t=this.parseOr(),n=e;e=new r.InlineIf(e.lineno,e.colno),e.body=n,e.cond=t,this.skipSymbol("else")?e.else_=this.parseOr():e.else_=null}return e},parseOr:function(){for(var e=this.parseAnd();this.skipSymbol("or");){var t=this.parseAnd();e=new r.Or(e.lineno,e.colno,e,t)}return e},parseAnd:function(){for(var e=this.parseNot();this.skipSymbol("and");){var t=this.parseNot();e=new r.And(e.lineno,e.colno,e,t)}return e},parseNot:function(){var e=this.peekToken();return this.skipSymbol("not")?new r.Not(e.lineno,e.colno,this.parseNot()):this.parseIn()},parseIn:function(){for(var e=this.parseCompare();;){var t=this.nextToken();if(!t)break;var n=t.type===i.TOKEN_SYMBOL&&"not"===t.value;if(n||this.pushToken(t),!this.skipSymbol("in")){n&&this.pushToken(t);break}var s=this.parseCompare();e=new r.In(e.lineno,e.colno,e,s),n&&(e=new r.Not(e.lineno,e.colno,e))}return e},parseCompare:function(){for(var e=["==","===","!=","!==","<",">","<=",">="],t=this.parseConcat(),n=[];;){var i=this.nextToken();if(!i)break;if(-1===o.indexOf(e,i.value)){this.pushToken(i);break}n.push(new r.CompareOperand(i.lineno,i.colno,this.parseConcat(),i.value))}return n.length?new r.Compare(n[0].lineno,n[0].colno,t,n):t},parseConcat:function(){for(var e=this.parseAdd();this.skipValue(i.TOKEN_TILDE,"~");){var t=this.parseAdd();e=new r.Concat(e.lineno,e.colno,e,t)}return e},parseAdd:function(){for(var e=this.parseSub();this.skipValue(i.TOKEN_OPERATOR,"+");){var t=this.parseSub();e=new r.Add(e.lineno,e.colno,e,t)}return e},parseSub:function(){for(var e=this.parseMul();this.skipValue(i.TOKEN_OPERATOR,"-");){var t=this.parseMul();e=new r.Sub(e.lineno,e.colno,e,t)}return e},parseMul:function(){for(var e=this.parseDiv();this.skipValue(i.TOKEN_OPERATOR,"*");){var t=this.parseDiv();e=new r.Mul(e.lineno,e.colno,e,t)}return e},parseDiv:function(){for(var e=this.parseFloorDiv();this.skipValue(i.TOKEN_OPERATOR,"/");){var t=this.parseFloorDiv();e=new r.Div(e.lineno,e.colno,e,t)}return e},parseFloorDiv:function(){for(var e=this.parseMod();this.skipValue(i.TOKEN_OPERATOR,"//");){var t=this.parseMod();e=new r.FloorDiv(e.lineno,e.colno,e,t)}return e},parseMod:function(){for(var e=this.parsePow();this.skipValue(i.TOKEN_OPERATOR,"%");){var t=this.parsePow();e=new r.Mod(e.lineno,e.colno,e,t)}return e},parsePow:function(){for(var e=this.parseUnary();this.skipValue(i.TOKEN_OPERATOR,"**");){var t=this.parseUnary();e=new r.Pow(e.lineno,e.colno,e,t)}return e},parseUnary:function(e){var t,n=this.peekToken();return t=this.skipValue(i.TOKEN_OPERATOR,"-")?new r.Neg(n.lineno,n.colno,this.parseUnary(!0)):this.skipValue(i.TOKEN_OPERATOR,"+")?new r.Pos(n.lineno,n.colno,this.parseUnary(!0)):this.parsePrimary(),e||(t=this.parseFilter(t)),t},parsePrimary:function(e){var t,n=this.nextToken(),s=null;return n?n.type===i.TOKEN_STRING?t=n.value:n.type===i.TOKEN_INT?t=parseInt(n.value,10):n.type===i.TOKEN_FLOAT?t=parseFloat(n.value):n.type===i.TOKEN_BOOLEAN?"true"===n.value?t=!0:"false"===n.value?t=!1:this.fail("invalid boolean: "+n.value,n.lineno,n.colno):n.type===i.TOKEN_NONE?t=null:n.type===i.TOKEN_REGEX&&(t=new RegExp(n.value.body,n.value.flags)):this.fail("expected expression, got end of file"),void 0!==t?s=new r.Literal(n.lineno,n.colno,t):n.type===i.TOKEN_SYMBOL?(s=new r.Symbol(n.lineno,n.colno,n.value),e||(s=this.parsePostfix(s))):(this.pushToken(n),s=this.parseAggregate()),s?s:void this.fail("unexpected token: "+n.value,n.lineno,n.colno)},parseFilterName:function(){for(var e=this.expect(i.TOKEN_SYMBOL),t=e.value;this.skipValue(i.TOKEN_OPERATOR,".");)t+="."+this.expect(i.TOKEN_SYMBOL).value;return new r.Symbol(e.lineno,e.colno,t)},parseFilterArgs:function(e){if(this.peekToken().type===i.TOKEN_LEFT_PAREN){var t=this.parsePostfix(e);return t.args.children}return[]},parseFilter:function(e){for(;this.skip(i.TOKEN_PIPE);){var t=this.parseFilterName();e=new r.Filter(t.lineno,t.colno,t,new r.NodeList(t.lineno,t.colno,[e].concat(this.parseFilterArgs(e))))}return e},parseFilterStatement:function(){var e=this.peekToken();this.skipSymbol("filter")||this.fail("parseFilterStatement: expected filter");var t=this.parseFilterName(),n=this.parseFilterArgs(t);this.advanceAfterBlockEnd(e.value);var i=new r.Capture(t.lineno,t.colno,this.parseUntilBlocks("endfilter"));this.advanceAfterBlockEnd();var s=new r.Filter(t.lineno,t.colno,t,new r.NodeList(t.lineno,t.colno,[i].concat(n)));return new r.Output(t.lineno,t.colno,[s])},parseAggregate:function(){var e,t=this.nextToken();switch(t.type){case i.TOKEN_LEFT_PAREN:e=new r.Group(t.lineno,t.colno);break;case i.TOKEN_LEFT_BRACKET:e=new r.Array(t.lineno,t.colno);break;case i.TOKEN_LEFT_CURLY:e=new r.Dict(t.lineno,t.colno);break;default:return null}for(;;){var n=this.peekToken().type;if(n===i.TOKEN_RIGHT_PAREN||n===i.TOKEN_RIGHT_BRACKET||n===i.TOKEN_RIGHT_CURLY){this.nextToken();break}if(e.children.length>0&&(this.skip(i.TOKEN_COMMA)||this.fail("parseAggregate: expected comma after expression",t.lineno,t.colno)),e instanceof r.Dict){var s=this.parsePrimary();this.skip(i.TOKEN_COLON)||this.fail("parseAggregate: expected colon after dict key",t.lineno,t.colno);var o=this.parseExpression();e.addChild(new r.Pair(s.lineno,s.colno,s,o))}else{var a=this.parseExpression();e.addChild(a)}}return e},parseSignature:function(e,t){var n=this.peekToken();if(!t&&n.type!==i.TOKEN_LEFT_PAREN){if(e)return null;this.fail("expected arguments",n.lineno,n.colno)}n.type===i.TOKEN_LEFT_PAREN&&(n=this.nextToken());for(var s=new r.NodeList(n.lineno,n.colno),o=new r.KeywordArgs(n.lineno,n.colno),a=!1;;){if(n=this.peekToken(),!t&&n.type===i.TOKEN_RIGHT_PAREN){this.nextToken();break}if(t&&n.type===i.TOKEN_BLOCK_END)break;if(a&&!this.skip(i.TOKEN_COMMA))this.fail("parseSignature: expected comma after expression",n.lineno,n.colno);else{var l=this.parseExpression();this.skipValue(i.TOKEN_OPERATOR,"=")?o.addChild(new r.Pair(l.lineno,l.colno,l,this.parseExpression())):s.addChild(l)}a=!0}return o.children.length&&s.addChild(o),s},parseUntilBlocks:function(){var e=this.breakOnBlocks;this.breakOnBlocks=o.toArray(arguments);var t=this.parse();return this.breakOnBlocks=e,t},parseNodes:function(){for(var e,t=[];e=this.nextToken();)if(e.type===i.TOKEN_DATA){var n=e.value,s=this.peekToken(),o=s&&s.value;this.dropLeadingWhitespace&&(n=n.replace(/^\s*/,""),this.dropLeadingWhitespace=!1),s&&(s.type===i.TOKEN_BLOCK_START&&"-"===o.charAt(o.length-1)||s.type===i.TOKEN_VARIABLE_START&&"-"===o.charAt(this.tokens.tags.VARIABLE_START.length)||s.type===i.TOKEN_COMMENT&&"-"===o.charAt(this.tokens.tags.COMMENT_START.length))&&(n=n.replace(/\s*$/,"")),t.push(new r.Output(e.lineno,e.colno,[new r.TemplateData(e.lineno,e.colno,n)]))}else if(e.type===i.TOKEN_BLOCK_START){this.dropLeadingWhitespace=!1;var a=this.parseStatement();if(!a)break;t.push(a)}else if(e.type===i.TOKEN_VARIABLE_START){var l=this.parseExpression();this.dropLeadingWhitespace=!1,this.advanceAfterVariableEnd(),t.push(new r.Output(e.lineno,e.colno,[l]))}else e.type===i.TOKEN_COMMENT?this.dropLeadingWhitespace="-"===e.value.charAt(e.value.length-this.tokens.tags.COMMENT_END.length-1):this.fail("Unexpected token at top-level: "+e.type,e.lineno,e.colno);return t},parse:function(){return new r.NodeList(0,0,this.parseNodes())},parseAsRoot:function(){return new r.Root(0,0,this.parseNodes())}});e.exports={parse:function(e,t,n){var r=new a(i.lex(e,n));return void 0!==t&&(r.extensions=t),r.parseAsRoot()}}},function(e,t,n){"use strict";function i(e,t,n,i){return{type:e,value:t,lineno:n,colno:i}}function r(e,t){this.str=e,this.index=0,this.len=e.length,this.lineno=0,this.colno=0,this.in_code=!1,t=t||{};var n=t.tags||{};this.tags={BLOCK_START:n.blockStart||c,BLOCK_END:n.blockEnd||h,VARIABLE_START:n.variableStart||u,VARIABLE_END:n.variableEnd||p,COMMENT_START:n.commentStart||f,COMMENT_END:n.commentEnd||m},this.trimBlocks=!!t.trimBlocks,this.lstripBlocks=!!t.lstripBlocks}var s=n(1),o=" \n	\r ",a="()[]{}%*-+~/#,:|.<>=!",l="0123456789",c="{%",h="%}",u="{{",p="}}",f="{#",m="#}",d="string",v="whitespace",g="data",y="block-start",k="block-end",x="variable-start",b="variable-end",E="comment",w="left-paren",T="right-paren",L="left-bracket",_="right-bracket",A="left-curly",O="right-curly",S="operator",N="comma",C="colon",B="tilde",F="pipe",I="int",R="float",K="boolean",M="none",P="symbol",D="special",j="regex";r.prototype.nextToken=function(){var e,t=this.lineno,n=this.colno;if(this.in_code){var r=this.current();if(this.is_finished())return null;if('"'===r||"'"===r)return i(d,this.parseString(r),t,n);if(e=this._extract(o))return i(v,e,t,n);if((e=this._extractString(this.tags.BLOCK_END))||(e=this._extractString("-"+this.tags.BLOCK_END)))return this.in_code=!1,this.trimBlocks&&(r=this.current(),"\n"===r?this.forward():"\r"===r&&(this.forward(),r=this.current(),"\n"===r?this.forward():this.back())),i(k,e,t,n);if((e=this._extractString(this.tags.VARIABLE_END))||(e=this._extractString("-"+this.tags.VARIABLE_END)))return this.in_code=!1,i(b,e,t,n);if("r"===r&&"/"===this.str.charAt(this.index+1)){this.forwardN(2);for(var c="";!this.is_finished();){if("/"===this.current()&&"\\"!==this.previous()){this.forward();break}c+=this.current(),this.forward()}for(var h=["g","i","m","y"],u="";!this.is_finished();){var p=-1!==h.indexOf(this.current());if(!p)break;u+=this.current(),this.forward()}return i(j,{body:c,flags:u},t,n)}if(-1!==a.indexOf(r)){this.forward();var f,m=["==","===","!=","!==","<=",">=","//","**"],D=r+this.current();switch(-1!==s.indexOf(m,D)&&(this.forward(),r=D,-1!==s.indexOf(m,D+this.current())&&(r=D+this.current(),this.forward())),r){case"(":f=w;break;case")":f=T;break;case"[":f=L;break;case"]":f=_;break;case"{":f=A;break;case"}":f=O;break;case",":f=N;break;case":":f=C;break;case"~":f=B;break;case"|":f=F;break;default:f=S}return i(f,r,t,n)}if(e=this._extractUntil(o+a),e.match(/^[-+]?[0-9]+$/)){if("."===this.current()){this.forward();var V=this._extract(l);return i(R,e+"."+V,t,n)}return i(I,e,t,n)}if(e.match(/^(true|false)$/))return i(K,e,t,n);if("none"===e)return i(M,e,t,n);if(e)return i(P,e,t,n);throw new Error("Unexpected value while parsing: "+e)}var U=this.tags.BLOCK_START.charAt(0)+this.tags.VARIABLE_START.charAt(0)+this.tags.COMMENT_START.charAt(0)+this.tags.COMMENT_END.charAt(0);if(this.is_finished())return null;if((e=this._extractString(this.tags.BLOCK_START+"-"))||(e=this._extractString(this.tags.BLOCK_START)))return this.in_code=!0,i(y,e,t,n);if((e=this._extractString(this.tags.VARIABLE_START+"-"))||(e=this._extractString(this.tags.VARIABLE_START)))return this.in_code=!0,i(x,e,t,n);e="";var W,G=!1;for(this._matches(this.tags.COMMENT_START)&&(G=!0,e=this._extractString(this.tags.COMMENT_START));null!==(W=this._extractUntil(U));){if(e+=W,(this._matches(this.tags.BLOCK_START)||this._matches(this.tags.VARIABLE_START)||this._matches(this.tags.COMMENT_START))&&!G){if(this.lstripBlocks&&this._matches(this.tags.BLOCK_START)&&this.colno>0&&this.colno<=e.length){var Y=e.slice(-this.colno);if(/^\s+$/.test(Y)&&(e=e.slice(0,-this.colno),!e.length))return this.nextToken()}break}if(this._matches(this.tags.COMMENT_END)){if(!G)throw new Error("unexpected end of comment");e+=this._extractString(this.tags.COMMENT_END);break}e+=this.current(),this.forward()}if(null===W&&G)throw new Error("expected end of comment, got end of file");return i(G?E:g,e,t,n)},r.prototype.parseString=function(e){this.forward();for(var t="";!this.is_finished()&&this.current()!==e;){var n=this.current();if("\\"===n){switch(this.forward(),this.current()){case"n":t+="\n";break;case"t":t+="	";break;case"r":t+="\r";break;default:t+=this.current()}this.forward()}else t+=n,this.forward()}return this.forward(),t},r.prototype._matches=function(e){if(this.index+e.length>this.len)return null;var t=this.str.slice(this.index,this.index+e.length);return t===e},r.prototype._extractString=function(e){return this._matches(e)?(this.index+=e.length,e):null},r.prototype._extractUntil=function(e){return this._extractMatching(!0,e||"")},r.prototype._extract=function(e){return this._extractMatching(!1,e)},r.prototype._extractMatching=function(e,t){if(this.is_finished())return null;var n=t.indexOf(this.current());if(e&&-1===n||!e&&-1!==n){var i=this.current();this.forward();for(var r=t.indexOf(this.current());(e&&-1===r||!e&&-1!==r)&&!this.is_finished();)i+=this.current(),this.forward(),r=t.indexOf(this.current());return i}return""},r.prototype._extractRegex=function(e){var t=this.currentStr().match(e);return t?(this.forwardN(t[0].length),t):null},r.prototype.is_finished=function(){return this.index>=this.len},r.prototype.forwardN=function(e){for(var t=0;e>t;t++)this.forward()},r.prototype.forward=function(){this.index++,"\n"===this.previous()?(this.lineno++,this.colno=0):this.colno++},r.prototype.backN=function(e){for(var t=0;e>t;t++)this.back()},r.prototype.back=function(){if(this.index--,"\n"===this.current()){this.lineno--;var e=this.src.lastIndexOf("\n",this.index-1);-1===e?this.colno=this.index:this.colno=this.index-e}else this.colno--},r.prototype.current=function(){return this.is_finished()?"":this.str.charAt(this.index)},r.prototype.currentStr=function(){return this.is_finished()?"":this.str.substr(this.index)},r.prototype.previous=function(){return this.str.charAt(this.index-1)},e.exports={lex:function(e,t){return new r(e,t)},TOKEN_STRING:d,TOKEN_WHITESPACE:v,TOKEN_DATA:g,TOKEN_BLOCK_START:y,TOKEN_BLOCK_END:k,TOKEN_VARIABLE_START:x,TOKEN_VARIABLE_END:b,TOKEN_COMMENT:E,TOKEN_LEFT_PAREN:w,TOKEN_RIGHT_PAREN:T,TOKEN_LEFT_BRACKET:L,TOKEN_RIGHT_BRACKET:_,TOKEN_LEFT_CURLY:A,TOKEN_RIGHT_CURLY:O,TOKEN_OPERATOR:S,TOKEN_COMMA:N,TOKEN_COLON:C,TOKEN_TILDE:B,TOKEN_PIPE:F,TOKEN_INT:I,TOKEN_FLOAT:R,TOKEN_BOOLEAN:K,TOKEN_NONE:M,TOKEN_SYMBOL:P,TOKEN_SPECIAL:D,TOKEN_REGEX:j}},function(e,t,n){(function(t){"use strict";function i(e,t,n){e instanceof t&&n.push(e),e instanceof a&&e.findAll(t,n)}function r(e,n){function i(e,n,i){for(var r=e.split("\n"),s=0;s<r.length;s++){if(r[s]&&(i&&s>0||!i))for(var o=0;n>o;o++)t.stdout.write(" ");s===r.length-1?t.stdout.write(r[s]):t.stdout.write(r[s]+"\n")}}if(n=n||0,i(e.typename+": ",n),e instanceof c)i("\n"),s.each(e.children,function(e){r(e,n+2)});else if(e instanceof 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t},iterFields:function(e){s.each(this.fields,function(t){e(this[t],t)},this)}}),l=a.extend("Value",{fields:["value"]}),c=a.extend("NodeList",{fields:["children"],init:function(e,t,n){this.parent(e,t,n||[])},addChild:function(e){this.children.push(e)}}),h=c.extend("Root"),u=l.extend("Literal"),p=l.extend("Symbol"),f=c.extend("Group"),m=c.extend("Array"),d=a.extend("Pair",{fields:["key","value"]}),v=c.extend("Dict"),g=a.extend("LookupVal",{fields:["target","val"]}),y=a.extend("If",{fields:["cond","body","else_"]}),k=y.extend("IfAsync"),x=a.extend("InlineIf",{fields:["cond","body","else_"]}),b=a.extend("For",{fields:["arr","name","body","else_"]}),E=b.extend("AsyncEach"),w=b.extend("AsyncAll"),T=a.extend("Macro",{fields:["name","args","body"]}),L=T.extend("Caller"),_=a.extend("Import",{fields:["template","target","withContext"]}),A=a.extend("FromImport",{fields:["template","names","withContext"],init:function(e,t,n,i,r){this.parent(e,t,n,i||new c,r)}}),O=a.extend("FunCall",{fields:["name","args"]}),S=O.extend("Filter"),N=S.extend("FilterAsync",{fields:["name","args","symbol"]}),C=v.extend("KeywordArgs"),B=a.extend("Block",{fields:["name","body"]}),F=a.extend("Super",{fields:["blockName","symbol"]}),I=a.extend("TemplateRef",{fields:["template"]}),R=I.extend("Extends"),K=a.extend("Include",{fields:["template","ignoreMissing"]}),M=a.extend("Set",{fields:["targets","value"]}),P=c.extend("Output"),D=a.extend("Capture",{fields:["body"]}),j=u.extend("TemplateData"),V=a.extend("UnaryOp",{fields:["target"]}),U=a.extend("BinOp",{fields:["left","right"]}),W=U.extend("In"),G=U.extend("Or"),Y=U.extend("And"),H=V.extend("Not"),$=U.extend("Add"),z=U.extend("Concat"),X=U.extend("Sub"),q=U.extend("Mul"),J=U.extend("Div"),Q=U.extend("FloorDiv"),Z=U.extend("Mod"),ee=U.extend("Pow"),te=V.extend("Neg"),ne=V.extend("Pos"),ie=a.extend("Compare",{fields:["expr","ops"]}),re=a.extend("CompareOperand",{fields:["expr","type"]}),se=a.extend("CallExtension",{fields:["extName","prop","args","contentArgs"],init:function(e,t,n,i){this.extName=e._name||e,this.prop=t,this.args=n||new 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+t},skipValue:function(e,t){var n=this.nextToken();return!(!n||n.type!==e||n.value!==t)||(this.pushToken(n),!1)},skipSymbol:function(e){return this.skipValue(i.TOKEN_SYMBOL,e)},advanceAfterBlockEnd:function(e){var t;return e||(t=this.peekToken(),t||this.fail("unexpected end of file"),t.type!==i.TOKEN_SYMBOL&&this.fail("advanceAfterBlockEnd: expected symbol token or explicit name to be passed"),e=this.nextToken().value),t=this.nextToken(),t&&t.type===i.TOKEN_BLOCK_END?"-"===t.value.charAt(0)&&(this.dropLeadingWhitespace=!0):this.fail("expected block end in "+e+" statement"),t},advanceAfterVariableEnd:function(){var e=this.nextToken();e&&e.type===i.TOKEN_VARIABLE_END?this.dropLeadingWhitespace="-"===e.value.charAt(e.value.length-this.tokens.tags.VARIABLE_END.length-1):(this.pushToken(e),this.fail("expected variable end"))},parseFor:function(){var e,t,n=this.peekToken();this.skipSymbol("for")?(e=new r.For(n.lineno,n.colno),t="endfor"):this.skipSymbol("asyncEach")?(e=new r.AsyncEach(n.lineno,n.colno),t="endeach"):this.skipSymbol("asyncAll")?(e=new r.AsyncAll(n.lineno,n.colno),t="endall"):this.fail("parseFor: expected for{Async}",n.lineno,n.colno),e.name=this.parsePrimary(),e.name instanceof r.Symbol||this.fail("parseFor: variable name expected for loop");var s=this.peekToken().type;if(s===i.TOKEN_COMMA){var o=e.name;for(e.name=new r.Array(o.lineno,o.colno),e.name.addChild(o);this.skip(i.TOKEN_COMMA);){var a=this.parsePrimary();e.name.addChild(a)}}return this.skipSymbol("in")||this.fail('parseFor: expected "in" keyword for loop',n.lineno,n.colno),e.arr=this.parseExpression(),this.advanceAfterBlockEnd(n.value),e.body=this.parseUntilBlocks(t,"else"),this.skipSymbol("else")&&(this.advanceAfterBlockEnd("else"),e.else_=this.parseUntilBlocks(t)),this.advanceAfterBlockEnd(),e},parseMacro:function(){var e=this.peekToken();this.skipSymbol("macro")||this.fail("expected macro");var t=this.parsePrimary(!0),n=this.parseSignature(),i=new r.Macro(e.lineno,e.colno,t,n);return this.advanceAfterBlockEnd(e.value),i.body=this.parseUntilBlocks("endmacro"),this.advanceAfterBlockEnd(),i},parseCall:function(){var e=this.peekToken();this.skipSymbol("call")||this.fail("expected call");var t=this.parseSignature(!0)||new r.NodeList,n=this.parsePrimary();this.advanceAfterBlockEnd(e.value);var i=this.parseUntilBlocks("endcall");this.advanceAfterBlockEnd();var s=new r.Symbol(e.lineno,e.colno,"caller"),o=new r.Caller(e.lineno,e.colno,s,t,i),a=n.args.children;a[a.length-1]instanceof r.KeywordArgs||a.push(new r.KeywordArgs);var l=a[a.length-1];return l.addChild(new r.Pair(e.lineno,e.colno,s,o)),new r.Output(e.lineno,e.colno,[n])},parseWithContext:function(){var e=this.peekToken(),t=null;return this.skipSymbol("with")?t=!0:this.skipSymbol("without")&&(t=!1),null!==t&&(this.skipSymbol("context")||this.fail("parseFrom: expected context after with/without",e.lineno,e.colno)),t},parseImport:function(){var e=this.peekToken();this.skipSymbol("import")||this.fail("parseImport: expected import",e.lineno,e.colno);var t=this.parseExpression();this.skipSymbol("as")||this.fail('parseImport: expected "as" keyword',e.lineno,e.colno);var n=this.parseExpression(),i=this.parseWithContext(),s=new r.Import(e.lineno,e.colno,t,n,i);return this.advanceAfterBlockEnd(e.value),s},parseFrom:function(){var e=this.peekToken();this.skipSymbol("from")||this.fail("parseFrom: expected from");var t=this.parseExpression();this.skipSymbol("import")||this.fail("parseFrom: expected import",e.lineno,e.colno);for(var n,s=new r.NodeList;;){var o=this.peekToken();if(o.type===i.TOKEN_BLOCK_END){s.children.length||this.fail("parseFrom: Expected at least one import name",e.lineno,e.colno),"-"===o.value.charAt(0)&&(this.dropLeadingWhitespace=!0),this.nextToken();break}s.children.length>0&&!this.skip(i.TOKEN_COMMA)&&this.fail("parseFrom: expected comma",e.lineno,e.colno);var a=this.parsePrimary();if("_"===a.value.charAt(0)&&this.fail("parseFrom: names starting with an underscore cannot be imported",a.lineno,a.colno),this.skipSymbol("as")){var l=this.parsePrimary();s.addChild(new r.Pair(a.lineno,a.colno,a,l))}else s.addChild(a);n=this.parseWithContext()}return new r.FromImport(e.lineno,e.colno,t,s,n)},parseBlock:function(){var e=this.peekToken();this.skipSymbol("block")||this.fail("parseBlock: expected block",e.lineno,e.colno);var t=new r.Block(e.lineno,e.colno);t.name=this.parsePrimary(),t.name instanceof r.Symbol||this.fail("parseBlock: variable name expected",e.lineno,e.colno),this.advanceAfterBlockEnd(e.value),t.body=this.parseUntilBlocks("endblock"),this.skipSymbol("endblock"),this.skipSymbol(t.name.value);var n=this.peekToken();return n||this.fail("parseBlock: expected endblock, got end of file"),this.advanceAfterBlockEnd(n.value),t},parseExtends:function(){var e="extends",t=this.peekToken();this.skipSymbol(e)||this.fail("parseTemplateRef: expected "+e);var n=new r.Extends(t.lineno,t.colno);return n.template=this.parseExpression(),this.advanceAfterBlockEnd(t.value),n},parseInclude:function(){var e="include",t=this.peekToken();this.skipSymbol(e)||this.fail("parseInclude: expected "+e);var n=new r.Include(t.lineno,t.colno);return n.template=this.parseExpression(),this.skipSymbol("ignore")&&this.skipSymbol("missing")&&(n.ignoreMissing=!0),this.advanceAfterBlockEnd(t.value),n},parseIf:function(){var e,t=this.peekToken();this.skipSymbol("if")||this.skipSymbol("elif")||this.skipSymbol("elseif")?e=new r.If(t.lineno,t.colno):this.skipSymbol("ifAsync")?e=new r.IfAsync(t.lineno,t.colno):this.fail("parseIf: expected if, elif, or elseif",t.lineno,t.colno),e.cond=this.parseExpression(),this.advanceAfterBlockEnd(t.value),e.body=this.parseUntilBlocks("elif","elseif","else","endif");var n=this.peekToken();switch(n&&n.value){case"elseif":case"elif":e.else_=this.parseIf();break;case"else":this.advanceAfterBlockEnd(),e.else_=this.parseUntilBlocks("endif"),this.advanceAfterBlockEnd();break;case"endif":e.else_=null,this.advanceAfterBlockEnd();break;default:this.fail("parseIf: expected elif, else, or endif, got end of file")}return e},parseSet:function(){var e=this.peekToken();this.skipSymbol("set")||this.fail("parseSet: expected set",e.lineno,e.colno);for(var t,n=new r.Set(e.lineno,e.colno,[]);(t=this.parsePrimary())&&(n.targets.push(t),this.skip(i.TOKEN_COMMA)););return this.skipValue(i.TOKEN_OPERATOR,"=")?(n.value=this.parseExpression(),this.advanceAfterBlockEnd(e.value)):this.skip(i.TOKEN_BLOCK_END)?(n.body=new r.Capture(e.lineno,e.colno,this.parseUntilBlocks("endset")),n.value=null,this.advanceAfterBlockEnd()):this.fail("parseSet: expected = or block end in set tag",e.lineno,e.colno),n},parseStatement:function(){var e,t=this.peekToken();if(t.type!==i.TOKEN_SYMBOL&&this.fail("tag name expected",t.lineno,t.colno),this.breakOnBlocks&&o.indexOf(this.breakOnBlocks,t.value)!==-1)return null;switch(t.value){case"raw":return this.parseRaw();case"verbatim":return this.parseRaw("verbatim");case"if":case"ifAsync":return this.parseIf();case"for":case"asyncEach":case"asyncAll":return this.parseFor();case"block":return this.parseBlock();case"extends":return this.parseExtends();case"include":return this.parseInclude();case"set":return this.parseSet();case"macro":return this.parseMacro();case"call":return this.parseCall();case"import":return this.parseImport();case"from":return this.parseFrom();case"filter":return this.parseFilterStatement();default:if(this.extensions.length)for(var n=0;n<this.extensions.length;n++){var s=this.extensions[n];if(o.indexOf(s.tags||[],t.value)!==-1)return s.parse(this,r,i)}this.fail("unknown block tag: "+t.value,t.lineno,t.colno)}return e},parseRaw:function(e){e=e||"raw";for(var t="end"+e,n=new RegExp("([\\s\\S]*?){%\\s*("+e+"|"+t+")\\s*(?=%})%}"),i=1,s="",o=null,a=this.advanceAfterBlockEnd();(o=this.tokens._extractRegex(n))&&i>0;){var l=o[0],c=o[1],h=o[2];h===e?i+=1:h===t&&(i-=1),0===i?(s+=c,this.tokens.backN(l.length-c.length)):s+=l}return new r.Output(a.lineno,a.colno,[new r.TemplateData(a.lineno,a.colno,s)])},parsePostfix:function(e){for(var t,n=this.peekToken();n;){if(n.type===i.TOKEN_LEFT_PAREN)e=new r.FunCall(n.lineno,n.colno,e,this.parseSignature());else if(n.type===i.TOKEN_LEFT_BRACKET)t=this.parseAggregate(),t.children.length>1&&this.fail("invalid index"),e=new r.LookupVal(n.lineno,n.colno,e,t.children[0]);else{if(n.type!==i.TOKEN_OPERATOR||"."!==n.value)break;this.nextToken();var s=this.nextToken();s.type!==i.TOKEN_SYMBOL&&this.fail("expected name as lookup value, got "+s.value,s.lineno,s.colno),t=new r.Literal(s.lineno,s.colno,s.value),e=new r.LookupVal(n.lineno,n.colno,e,t)}n=this.peekToken()}return e},parseExpression:function(){var e=this.parseInlineIf();return e},parseInlineIf:function(){var e=this.parseOr();if(this.skipSymbol("if")){var t=this.parseOr(),n=e;e=new r.InlineIf(e.lineno,e.colno),e.body=n,e.cond=t,this.skipSymbol("else")?e.else_=this.parseOr():e.else_=null}return e},parseOr:function(){for(var e=this.parseAnd();this.skipSymbol("or");){var t=this.parseAnd();e=new r.Or(e.lineno,e.colno,e,t)}return e},parseAnd:function(){for(var e=this.parseNot();this.skipSymbol("and");){var t=this.parseNot();e=new r.And(e.lineno,e.colno,e,t)}return e},parseNot:function(){var e=this.peekToken();return this.skipSymbol("not")?new r.Not(e.lineno,e.colno,this.parseNot()):this.parseIn()},parseIn:function(){for(var e=this.parseCompare();;){var t=this.nextToken();if(!t)break;var n=t.type===i.TOKEN_SYMBOL&&"not"===t.value;if(n||this.pushToken(t),!this.skipSymbol("in")){n&&this.pushToken(t);break}var s=this.parseCompare();e=new r.In(e.lineno,e.colno,e,s),n&&(e=new r.Not(e.lineno,e.colno,e))}return e},parseCompare:function(){for(var e=["==","===","!=","!==","<",">","<=",">="],t=this.parseConcat(),n=[];;){var i=this.nextToken();if(!i)break;if(o.indexOf(e,i.value)===-1){this.pushToken(i);break}n.push(new r.CompareOperand(i.lineno,i.colno,this.parseConcat(),i.value))}return n.length?new r.Compare(n[0].lineno,n[0].colno,t,n):t},parseConcat:function(){for(var e=this.parseAdd();this.skipValue(i.TOKEN_TILDE,"~");){var t=this.parseAdd();e=new r.Concat(e.lineno,e.colno,e,t)}return e},parseAdd:function(){for(var e=this.parseSub();this.skipValue(i.TOKEN_OPERATOR,"+");){var t=this.parseSub();e=new r.Add(e.lineno,e.colno,e,t)}return e},parseSub:function(){for(var e=this.parseMul();this.skipValue(i.TOKEN_OPERATOR,"-");){var t=this.parseMul();e=new r.Sub(e.lineno,e.colno,e,t)}return e},parseMul:function(){for(var e=this.parseDiv();this.skipValue(i.TOKEN_OPERATOR,"*");){var t=this.parseDiv();e=new r.Mul(e.lineno,e.colno,e,t)}return e},parseDiv:function(){for(var e=this.parseFloorDiv();this.skipValue(i.TOKEN_OPERATOR,"/");){var t=this.parseFloorDiv();e=new r.Div(e.lineno,e.colno,e,t)}return e},parseFloorDiv:function(){for(var e=this.parseMod();this.skipValue(i.TOKEN_OPERATOR,"//");){var t=this.parseMod();e=new r.FloorDiv(e.lineno,e.colno,e,t)}return e},parseMod:function(){for(var e=this.parsePow();this.skipValue(i.TOKEN_OPERATOR,"%");){var t=this.parsePow();e=new r.Mod(e.lineno,e.colno,e,t)}return e},parsePow:function(){for(var e=this.parseUnary();this.skipValue(i.TOKEN_OPERATOR,"**");){var t=this.parseUnary();e=new r.Pow(e.lineno,e.colno,e,t)}return e},parseUnary:function(e){var t,n=this.peekToken();return t=this.skipValue(i.TOKEN_OPERATOR,"-")?new r.Neg(n.lineno,n.colno,this.parseUnary(!0)):this.skipValue(i.TOKEN_OPERATOR,"+")?new r.Pos(n.lineno,n.colno,this.parseUnary(!0)):this.parsePrimary(),e||(t=this.parseFilter(t)),t},parsePrimary:function(e){var t,n=this.nextToken(),s=null;return n?n.type===i.TOKEN_STRING?t=n.value:n.type===i.TOKEN_INT?t=parseInt(n.value,10):n.type===i.TOKEN_FLOAT?t=parseFloat(n.value):n.type===i.TOKEN_BOOLEAN?"true"===n.value?t=!0:"false"===n.value?t=!1:this.fail("invalid boolean: "+n.value,n.lineno,n.colno):n.type===i.TOKEN_NONE?t=null:n.type===i.TOKEN_REGEX&&(t=new RegExp(n.value.body,n.value.flags)):this.fail("expected expression, got end of file"),void 0!==t?s=new r.Literal(n.lineno,n.colno,t):n.type===i.TOKEN_SYMBOL?s=new r.Symbol(n.lineno,n.colno,n.value):(this.pushToken(n),s=this.parseAggregate()),e||(s=this.parsePostfix(s)),s?s:void this.fail("unexpected token: "+n.value,n.lineno,n.colno)},parseFilterName:function(){for(var e=this.expect(i.TOKEN_SYMBOL),t=e.value;this.skipValue(i.TOKEN_OPERATOR,".");)t+="."+this.expect(i.TOKEN_SYMBOL).value;return new r.Symbol(e.lineno,e.colno,t)},parseFilterArgs:function(e){if(this.peekToken().type===i.TOKEN_LEFT_PAREN){var t=this.parsePostfix(e);return t.args.children}return[]},parseFilter:function(e){for(;this.skip(i.TOKEN_PIPE);){var t=this.parseFilterName();e=new r.Filter(t.lineno,t.colno,t,new r.NodeList(t.lineno,t.colno,[e].concat(this.parseFilterArgs(e))))}return e},parseFilterStatement:function(){var e=this.peekToken();this.skipSymbol("filter")||this.fail("parseFilterStatement: expected filter");var t=this.parseFilterName(),n=this.parseFilterArgs(t);this.advanceAfterBlockEnd(e.value);var i=new r.Capture(t.lineno,t.colno,this.parseUntilBlocks("endfilter"));this.advanceAfterBlockEnd();var s=new r.Filter(t.lineno,t.colno,t,new r.NodeList(t.lineno,t.colno,[i].concat(n)));return new r.Output(t.lineno,t.colno,[s])},parseAggregate:function(){var e,t=this.nextToken();switch(t.type){case i.TOKEN_LEFT_PAREN:e=new r.Group(t.lineno,t.colno);break;case i.TOKEN_LEFT_BRACKET:e=new r.Array(t.lineno,t.colno);break;case i.TOKEN_LEFT_CURLY:e=new r.Dict(t.lineno,t.colno);break;default:return null}for(;;){var n=this.peekToken().type;if(n===i.TOKEN_RIGHT_PAREN||n===i.TOKEN_RIGHT_BRACKET||n===i.TOKEN_RIGHT_CURLY){this.nextToken();break}if(e.children.length>0&&(this.skip(i.TOKEN_COMMA)||this.fail("parseAggregate: expected comma after expression",t.lineno,t.colno)),e instanceof r.Dict){var s=this.parsePrimary();this.skip(i.TOKEN_COLON)||this.fail("parseAggregate: expected colon after dict key",t.lineno,t.colno);var o=this.parseExpression();e.addChild(new r.Pair(s.lineno,s.colno,s,o))}else{var a=this.parseExpression();e.addChild(a)}}return e},parseSignature:function(e,t){var n=this.peekToken();if(!t&&n.type!==i.TOKEN_LEFT_PAREN){if(e)return null;this.fail("expected arguments",n.lineno,n.colno)}n.type===i.TOKEN_LEFT_PAREN&&(n=this.nextToken());for(var s=new r.NodeList(n.lineno,n.colno),o=new r.KeywordArgs(n.lineno,n.colno),a=!1;;){if(n=this.peekToken(),!t&&n.type===i.TOKEN_RIGHT_PAREN){this.nextToken();break}if(t&&n.type===i.TOKEN_BLOCK_END)break;if(a&&!this.skip(i.TOKEN_COMMA))this.fail("parseSignature: expected comma after expression",n.lineno,n.colno);else{var l=this.parseExpression();this.skipValue(i.TOKEN_OPERATOR,"=")?o.addChild(new r.Pair(l.lineno,l.colno,l,this.parseExpression())):s.addChild(l)}a=!0}return o.children.length&&s.addChild(o),s},parseUntilBlocks:function(){var e=this.breakOnBlocks;this.breakOnBlocks=o.toArray(arguments);var t=this.parse();return this.breakOnBlocks=e,t},parseNodes:function(){for(var e,t=[];e=this.nextToken();)if(e.type===i.TOKEN_DATA){var n=e.value,s=this.peekToken(),o=s&&s.value;this.dropLeadingWhitespace&&(n=n.replace(/^\s*/,""),this.dropLeadingWhitespace=!1),s&&(s.type===i.TOKEN_BLOCK_START&&"-"===o.charAt(o.length-1)||s.type===i.TOKEN_VARIABLE_START&&"-"===o.charAt(this.tokens.tags.VARIABLE_START.length)||s.type===i.TOKEN_COMMENT&&"-"===o.charAt(this.tokens.tags.COMMENT_START.length))&&(n=n.replace(/\s*$/,"")),t.push(new r.Output(e.lineno,e.colno,[new r.TemplateData(e.lineno,e.colno,n)]))}else if(e.type===i.TOKEN_BLOCK_START){this.dropLeadingWhitespace=!1;var a=this.parseStatement();if(!a)break;t.push(a)}else if(e.type===i.TOKEN_VARIABLE_START){var l=this.parseExpression();this.dropLeadingWhitespace=!1,this.advanceAfterVariableEnd(),t.push(new r.Output(e.lineno,e.colno,[l]))}else e.type===i.TOKEN_COMMENT?this.dropLeadingWhitespace="-"===e.value.charAt(e.value.length-this.tokens.tags.COMMENT_END.length-1):this.fail("Unexpected token at top-level: "+e.type,e.lineno,e.colno);return t},parse:function(){return new r.NodeList(0,0,this.parseNodes())},parseAsRoot:function(){return new r.Root(0,0,this.parseNodes())}});e.exports={parse:function(e,t,n){var r=new a(i.lex(e,n));return void 0!==t&&(r.extensions=t),r.parseAsRoot()},Parser:a}},function(e,t,n){"use strict";function i(e,t,n,i){return{type:e,value:t,lineno:n,colno:i}}function r(e,t){this.str=e,this.index=0,this.len=e.length,this.lineno=0,this.colno=0,this.in_code=!1,t=t||{};var n=t.tags||{};this.tags={BLOCK_START:n.blockStart||c,BLOCK_END:n.blockEnd||h,VARIABLE_START:n.variableStart||u,VARIABLE_END:n.variableEnd||p,COMMENT_START:n.commentStart||f,COMMENT_END:n.commentEnd||m},this.trimBlocks=!!t.trimBlocks,this.lstripBlocks=!!t.lstripBlocks}var s=n(1),o=" \n\t\r ",a="()[]{}%*-+~/#,:|.<>=!",l="0123456789",c="{%",h="%}",u="{{",p="}}",f="{#",m="#}",d="string",v="whitespace",g="data",y="block-start",k="block-end",x="variable-start",b="variable-end",E="comment",w="left-paren",T="right-paren",L="left-bracket",_="right-bracket",O="left-curly",A="right-curly",S="operator",N="comma",C="colon",B="tilde",F="pipe",I="int",R="float",K="boolean",M="none",P="symbol",j="special",D="regex";r.prototype.nextToken=function(){var e,t=this.lineno,n=this.colno;if(this.in_code){var r=this.current();if(this.is_finished())return null;if('"'===r||"'"===r)return i(d,this.parseString(r),t,n);if(e=this._extract(o))return i(v,e,t,n);if((e=this._extractString(this.tags.BLOCK_END))||(e=this._extractString("-"+this.tags.BLOCK_END)))return this.in_code=!1,this.trimBlocks&&(r=this.current(),"\n"===r?this.forward():"\r"===r&&(this.forward(),r=this.current(),"\n"===r?this.forward():this.back())),i(k,e,t,n);if((e=this._extractString(this.tags.VARIABLE_END))||(e=this._extractString("-"+this.tags.VARIABLE_END)))return this.in_code=!1,i(b,e,t,n);if("r"===r&&"/"===this.str.charAt(this.index+1)){this.forwardN(2);for(var c="";!this.is_finished();){if("/"===this.current()&&"\\"!==this.previous()){this.forward();break}c+=this.current(),this.forward()}for(var h=["g","i","m","y"],u="";!this.is_finished();){var p=h.indexOf(this.current())!==-1;if(!p)break;u+=this.current(),this.forward()}return i(D,{body:c,flags:u},t,n)}if(a.indexOf(r)!==-1){this.forward();var f,m=["==","===","!=","!==","<=",">=","//","**"],j=r+this.current();switch(s.indexOf(m,j)!==-1&&(this.forward(),r=j,s.indexOf(m,j+this.current())!==-1&&(r=j+this.current(),this.forward())),r){case"(":f=w;break;case")":f=T;break;case"[":f=L;break;case"]":f=_;break;case"{":f=O;break;case"}":f=A;break;case",":f=N;break;case":":f=C;break;case"~":f=B;break;case"|":f=F;break;default:f=S}return i(f,r,t,n)}if(e=this._extractUntil(o+a),e.match(/^[-+]?[0-9]+$/)){if("."===this.current()){this.forward();var V=this._extract(l);return i(R,e+"."+V,t,n)}return i(I,e,t,n)}if(e.match(/^(true|false)$/))return i(K,e,t,n);if("none"===e)return i(M,e,t,n);if(e)return i(P,e,t,n);throw new Error("Unexpected value while parsing: "+e)}var U=this.tags.BLOCK_START.charAt(0)+this.tags.VARIABLE_START.charAt(0)+this.tags.COMMENT_START.charAt(0)+this.tags.COMMENT_END.charAt(0);if(this.is_finished())return null;if((e=this._extractString(this.tags.BLOCK_START+"-"))||(e=this._extractString(this.tags.BLOCK_START)))return this.in_code=!0,i(y,e,t,n);if((e=this._extractString(this.tags.VARIABLE_START+"-"))||(e=this._extractString(this.tags.VARIABLE_START)))return this.in_code=!0,i(x,e,t,n);e="";var W,G=!1;for(this._matches(this.tags.COMMENT_START)&&(G=!0,e=this._extractString(this.tags.COMMENT_START));null!==(W=this._extractUntil(U));){if(e+=W,(this._matches(this.tags.BLOCK_START)||this._matches(this.tags.VARIABLE_START)||this._matches(this.tags.COMMENT_START))&&!G){if(this.lstripBlocks&&this._matches(this.tags.BLOCK_START)&&this.colno>0&&this.colno<=e.length){var H=e.slice(-this.colno);if(/^\s+$/.test(H)&&(e=e.slice(0,-this.colno),!e.length))return this.nextToken()}break}if(this._matches(this.tags.COMMENT_END)){if(!G)throw new Error("unexpected end of comment");e+=this._extractString(this.tags.COMMENT_END);break}e+=this.current(),this.forward()}if(null===W&&G)throw new Error("expected end of comment, got end of file");return i(G?E:g,e,t,n)},r.prototype.parseString=function(e){this.forward();for(var 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diff --git a/package.json b/package.json
index b1932e8c..4fb3c169 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "nunjucks",
   "description": "A powerful templating engine with inheritance, asynchronous control, and more (jinja2 inspired)",
-  "version": "3.0.1-dev.1",
+  "version": "3.0.1",
   "author": "James Long <longster@gmail.com>",
   "dependencies": {
     "a-sync-waterfall": "^1.0.0",