diff --git a/package-lock.json b/package-lock.json
index 4ab3f91..db4df5a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -57,7 +57,7 @@
       "dev": true,
       "requires": {
         "@ava/babel-plugin-throws-helper": "2.0.0",
-        "babel-plugin-espower": "2.3.2"
+        "babel-plugin-espower": "2.4.0"
       }
     },
     "@ava/write-file-atomic": {
@@ -80,6 +80,52 @@
         "arrify": "1.0.1"
       }
     },
+    "@ladjs/time-require": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/@ladjs/time-require/-/time-require-0.1.4.tgz",
+      "integrity": "sha512-weIbJqTMfQ4r1YX85u54DKfjLZs2jwn1XZ6tIOP/pFgMwhIN5BAtaCp/1wn9DzyLsDR9tW0R2NIePcVJ45ivQQ==",
+      "dev": true,
+      "requires": {
+        "chalk": "0.4.0",
+        "date-time": "0.1.1",
+        "pretty-ms": "0.2.2",
+        "text-table": "0.2.0"
+      },
+      "dependencies": {
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+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-1.0.0.tgz",
+          "integrity": "sha1-yxAt8cVvUSPquLZ817mAJ6AnkXg=",
+          "dev": true
+        },
+        "chalk": {
+          "version": "0.4.0",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-0.4.0.tgz",
+          "integrity": "sha1-UZmj3c0MHv4jvAjBsCewYXbgxk8=",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "1.0.0",
+            "has-color": "0.1.7",
+            "strip-ansi": "0.1.1"
+          }
+        },
+        "pretty-ms": {
+          "version": "0.2.2",
+          "resolved": "https://registry.npmjs.org/pretty-ms/-/pretty-ms-0.2.2.tgz",
+          "integrity": "sha1-2oeaaC/zOjcBEEbxPWJ/Z8c7hPY=",
+          "dev": true,
+          "requires": {
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+        },
+        "strip-ansi": {
+          "version": "0.1.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-0.1.1.tgz",
+          "integrity": "sha1-OeipjQRNFQZgq+SmgIrPcLt7yZE=",
+          "dev": true
+        }
+      }
+    },
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       "resolved": "https://registry.npmjs.org/@terrajs/mono/-/mono-0.9.1.tgz",
@@ -192,9 +238,9 @@
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-      "integrity": "sha512-o96FZLJBPY1lvTuJylGA9Bk3t/GKPPJG8H0ydQQl01crzwJgspa4AEIq/pVTXigmK0PHVQhiAtn8WMBLL9D2WA==",
+      "version": "5.5.3",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.5.3.tgz",
+      "integrity": "sha512-jd5MkIUlbbmb07nXH0DT3y7rDVtkzDi4XZOUVWAer8ajmF/DTSSbl5oNFyDOl/OXA33Bl79+ypHhl2pN20VeOQ==",
       "dev": true
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@@ -227,9 +273,9 @@
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-      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.0.tgz",
-      "integrity": "sha1-opbhf3v658HOT34N5T0pyzIWLfA=",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.1.tgz",
+      "integrity": "sha1-YXmX/F9gV2iUxDX5QNgZ4TW4B2I=",
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@@ -275,9 +321,9 @@
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-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-2.0.0.tgz",
-      "integrity": "sha1-W65SvkJIeN2Xg+iRDj/Cki6DyBs=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.0.0.tgz",
+      "integrity": "sha512-O/klc27mWNUigtv0F8NJWbLF00OcegQalkqKURWdosW08YZKi4m6CnSUSvIZG1otNJbTWhN01Hhz389DW7mvDQ==",
       "dev": true
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@@ -441,30 +487,33 @@
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-      "resolved": "https://registry.npmjs.org/auto-bind/-/auto-bind-1.1.0.tgz",
-      "integrity": "sha1-k7hk3H7gGjJigXddXHXKCnUeWWE=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/auto-bind/-/auto-bind-1.2.0.tgz",
+      "integrity": "sha512-Zw7pZp7tztvKnWWtoII4AmqH5a2PV3ZN5F0BPRTGcc1kpRm4b6QXQnPU7Znbl6BfPfqOVOV29g4JeMqZQaqqOA==",
       "dev": true
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-      "resolved": "https://registry.npmjs.org/ava/-/ava-0.22.0.tgz",
-      "integrity": "sha512-dYxvVDL9CeIcgaQ/FojaBVaL/rnIsXdgPVliDOMe1O5nSsIZEsPYDIzmZ1KnO/cuxeQx1PQbtW6qziiEwQZusg==",
+      "version": "0.25.0",
+      "resolved": "https://registry.npmjs.org/ava/-/ava-0.25.0.tgz",
+      "integrity": "sha512-4lGNJCf6xL8SvsKVEKxEE46se7JAUIAZoKHw9itTQuwcsydhpAMkBs5gOOiWiwt0JKNIuXWc2/r4r8ZdcNrBEw==",
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-        "ansi-escapes": "2.0.0",
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-        "auto-bind": "1.1.0",
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+        "babel-generator": "6.26.1",
+        "babel-plugin-syntax-object-rest-spread": "6.13.0",
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@@ -475,13 +524,13 @@
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-        "code-excerpt": "2.1.0",
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         "common-path-prefix": "1.0.0",
         "concordance": "3.0.0",
-        "convert-source-map": "1.5.0",
+        "convert-source-map": "1.5.1",
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         "currently-unhandled": "0.4.1",
-        "debug": "2.6.9",
+        "debug": "3.1.0",
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@@ -495,12 +544,11 @@
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         "indent-string": "3.2.0",
-        "is-ci": "1.0.10",
+        "is-ci": "1.1.0",
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         "is-obj": "1.0.1",
-        "is-observable": "0.2.0",
+        "is-observable": "1.1.0",
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-        "js-yaml": "3.10.0",
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@@ -508,7 +556,7 @@
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-        "matcher": "1.0.0",
+        "matcher": "1.1.0",
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@@ -516,19 +564,20 @@
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         "package-hash": "2.0.0",
-        "pkg-conf": "2.0.0",
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-        "pretty-ms": "2.1.0",
+        "pretty-ms": "3.1.0",
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         "resolve-cwd": "2.0.0",
         "safe-buffer": "5.1.1",
+        "semver": "5.4.1",
         "slash": "1.0.0",
-        "source-map-support": "0.4.18",
+        "source-map-support": "0.5.3",
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         "strip-bom-buf": "1.0.0",
-        "supports-color": "4.5.0",
-        "time-require": "0.1.2",
+        "supertap": "1.0.0",
+        "supports-color": "5.3.0",
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@@ -540,21 +589,15 @@
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-          "resolved": "https://registry.npmjs.org/dot-prop/-/dot-prop-4.2.0.tgz",
-          "integrity": "sha512-tUMXrxlExSW6U2EXiiKGSBVdYgtV8qlHL+C10TsW4PURY/ic+eaysnSkwB4kA/mBlCyy/IKDJ+Lc3wbWeaXtuQ==",
+        "debug": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
           "dev": true,
           "requires": {
-            "is-obj": "1.0.1"
+            "ms": "2.0.0"
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-        "indent-string": {
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-          "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-3.2.0.tgz",
-          "integrity": "sha1-Sl/W0nzDMvN+VBmlBNu4NxBckok=",
-          "dev": true
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@@ -563,6 +606,23 @@
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+        },
+        "supports-color": {
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.3.0.tgz",
+          "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
+          "dev": true,
+          "requires": {
+            "has-flag": "3.0.0"
+          },
+          "dependencies": {
+            "has-flag": {
+              "version": "3.0.0",
+              "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+              "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+              "dev": true
+            }
+          }
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@@ -577,86 +637,6 @@
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-          "integrity": "sha1-lEvs00zEHuMqY6n68nrVpl/Fl3c=",
-          "dev": true,
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-          "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
-          "dev": true,
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-          "dev": true,
-          "requires": {
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-            "parse-json": "2.2.0",
-            "pify": "2.3.0",
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-          "integrity": "sha1-jvHAYjxqbbDcZxPEv6xGMysjaPg=",
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-          "dev": true
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@@ -716,7 +696,7 @@
       "dev": true,
       "requires": {
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-        "babel-generator": "6.26.0",
+        "babel-generator": "6.26.1",
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@@ -725,7 +705,7 @@
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         "babylon": "6.18.0",
-        "convert-source-map": "1.5.0",
+        "convert-source-map": "1.5.1",
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         "json5": "0.5.1",
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@@ -734,20 +714,12 @@
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-      "resolved": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.26.0.tgz",
-      "integrity": "sha1-rBriAHC3n248odMmlhMFN3TyDcU=",
+      "version": "6.26.1",
+      "resolved": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.26.1.tgz",
+      "integrity": "sha512-HyfwY6ApZj7BYTcJURpM5tznulaBvyio7/0d4zFOeMPUmfxkCjHocCuoLa2SAGzBI8AREcH3eP3758F672DppA==",
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@@ -765,12 +737,6 @@
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@@ -894,15 +860,15 @@
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-      "integrity": "sha1-VRa4/NsmyfDh2BYHSfbkxl5xJx4=",
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/babel-plugin-espower/-/babel-plugin-espower-2.4.0.tgz",
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       "dev": true,
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-        "babel-generator": "6.26.0",
+        "babel-generator": "6.26.1",
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@@ -920,6 +886,12 @@
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+      "resolved": "https://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz",
+      "integrity": "sha1-/WU28rzhODb/o6VFjEkDpZe7O/U=",
+      "dev": true
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@@ -1043,11 +1015,22 @@
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-        "core-js": "2.5.1",
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         "mkdirp": "0.5.1",
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+          "dev": true,
+          "requires": {
+            "source-map": "0.5.7"
+          }
+        }
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@@ -1056,8 +1039,8 @@
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       "dev": true,
       "requires": {
-        "core-js": "2.5.1",
-        "regenerator-runtime": "0.11.0"
+        "core-js": "2.5.3",
+        "regenerator-runtime": "0.11.1"
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@@ -1086,7 +1069,7 @@
         "babylon": "6.18.0",
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@@ -1286,9 +1269,9 @@
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@@ -10071,6 +10114,12 @@
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diff --git a/package.json b/package.json
index e7a17bb..01055e2 100644
--- a/package.json
+++ b/package.json
@@ -38,12 +38,12 @@
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