diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2070b52..5424152 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## unreleased ([diff](https://github.com/ykmnkmi/jinja.dart/compare/c12244e6..be035c5f))
+## 0.6.0 ([diff](https://github.com/ykmnkmi/jinja.dart/compare/c12244e6..main))
 - bump SDK version to 3.3.0.
 - update dependencies.
 - internal changes.
@@ -8,6 +8,7 @@
     - `import`
     - `from`
   - `Template`:
+    - `Template.fromNode({globals})` argument
     - `globals` field
 - restored:
   - conditional and variable `extends` statement variants
@@ -35,7 +36,7 @@
     - `title`
 - changed:
   - `Environment`:
-    - `Environment({modifiers})` from `List<NodeVisitor>` to `List<Node Function(Node)>`
+    - `Environment({modifiers})` argument type from `List<NodeVisitor>` to `List<Node Function(Node)>`
     - `modifiers` type from `List<NodeVisitor>` to `List<Node Function(Node)>`
     - `scan(...)` return type from `List<Node>` to `Node`
     - `parse(...)` return type from `List<Node>` to `Node`
diff --git a/README.md b/README.md
index 9edcdd3..e16021d 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,6 @@ Variables, expressions, control structures and template inheritance.
 - `*args` and `**kwargs` arguments support removed
 - Auto-escaping and related statements, filters and tests have been removed due to the impossibility of extending `String`.
   Use the `escape` filter manually or escape values before passing them to the template.
-- _work in progress_
 
 For more information, see `CHANGELOG.md`.
 
diff --git a/lib/loaders.dart b/lib/loaders.dart
index 07295fa..1d8ee7c 100644
--- a/lib/loaders.dart
+++ b/lib/loaders.dart
@@ -124,9 +124,4 @@ class FileSystemLoader extends Loader {
     return environment.fromString(getSource(path),
         path: path, globals: globals);
   }
-
-  @override
-  String toString() {
-    return 'FileSystemLoader(${paths.join(', ')})';
-  }
 }
diff --git a/lib/src/environment.dart b/lib/src/environment.dart
index a665b51..3744999 100644
--- a/lib/src/environment.dart
+++ b/lib/src/environment.dart
@@ -554,7 +554,7 @@ base class Template {
   String render([Map<String, Object?>? data]) {
     var buffer = StringBuffer();
     renderTo(buffer, data);
-    return buffer.toString();
+    return '$buffer';
   }
 
   /// If no arguments are given the context will be empty.
diff --git a/pubspec.yaml b/pubspec.yaml
index a190866..3f6ff66 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: jinja
-version: 0.6.0-dev.16
+version: 0.6.0
 description: >-
   Jinja2 template engine for Dart.
   Variables, expressions, control structures and template inheritance.
diff --git a/test/file_system_loader_test.dart b/test/file_system_loader_test.dart
new file mode 100644
index 0000000..984232e
--- /dev/null
+++ b/test/file_system_loader_test.dart
@@ -0,0 +1,41 @@
+@TestOn('vm')
+library;
+
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:jinja/jinja.dart';
+import 'package:jinja/loaders.dart';
+import 'package:test/test.dart';
+
+void main() {
+  var pathUri = Directory.current.uri.resolve('test/res/templates');
+  var paths = <String>[pathUri.path];
+
+  group('FileSystemLoader', () {
+    test('paths', () {
+      var loader = FileSystemLoader(paths: paths);
+      var env = Environment(loader: loader);
+      var tmpl = env.getTemplate('test.html');
+      expect(tmpl.render().trim(), equals('BAR'));
+      tmpl = env.getTemplate('foo/test.html');
+      expect(tmpl.render().trim(), equals('FOO'));
+    });
+
+    test('utf8', () {
+      var loader = FileSystemLoader(
+          paths: paths, extensions: <String>{'txt'}, encoding: utf8);
+      var env = Environment(loader: loader);
+      var tmpl = env.getTemplate('mojibake.txt');
+      expect(tmpl.render().trim(), equals('文字化け'));
+    });
+
+    test('iso-8859-1', () {
+      var loader = FileSystemLoader(
+          paths: paths, extensions: <String>{'txt'}, encoding: latin1);
+      var env = Environment(loader: loader);
+      var tmpl = env.getTemplate('mojibake.txt');
+      expect(tmpl.render().trim(), equals('æ\x96\x87\xe5\xad\x97\xe5\x8c\x96\xe3\x81\x91'));
+    });
+  });
+}
diff --git a/test/loader_test.dart b/test/loader_test.dart
new file mode 100644
index 0000000..f2d268f
--- /dev/null
+++ b/test/loader_test.dart
@@ -0,0 +1,21 @@
+@TestOn('vm || chrome')
+library;
+
+import 'package:jinja/jinja.dart';
+import 'package:test/test.dart';
+
+MapLoader mapLoader() {
+  return MapLoader({'justdict.html': 'FOO'});
+}
+
+void main() {
+  group('Loaders', () {
+    test('MapLoader', () {
+      var env = Environment(loader: mapLoader());
+      var tmpl = env.getTemplate('justdict.html');
+      expect(tmpl.render().trim(), equals('FOO'));
+      expect(() => env.getTemplate('missing.html'),
+          throwsA(isA<TemplateNotFound>()));
+    });
+  });
+}
diff --git a/test/res/templates/foo/test.html b/test/res/templates/foo/test.html
new file mode 100644
index 0000000..d96c7ef
--- /dev/null
+++ b/test/res/templates/foo/test.html
@@ -0,0 +1 @@
+FOO
\ No newline at end of file
diff --git a/test/res/templates/mojibake.txt b/test/res/templates/mojibake.txt
new file mode 100644
index 0000000..0cd3e46
--- /dev/null
+++ b/test/res/templates/mojibake.txt
@@ -0,0 +1 @@
+文字化け
\ No newline at end of file