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packages/polymer_expressions/CHANGELOG.md

Index: packages/polymer_expressions/CHANGELOG.md
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+#### Pub version 0.13.1
+ * Update `observe` dependency.
+
+#### Pub version 0.13.0
+  * Move minimum 'template_binding' constraint to 0.13.0.
+  * Additional polyfills are now required when using this package outside of 
+    polymer. All the files in the 'template_binding' package under lib/js should
+    be included at the top of your app in addition to platform.js from the
+    'web_components' package.
+
+#### Pub version 0.12.0+1
+  * Widen dependency constraint on `observe`.
+
+#### Pub version 0.12.0
+  * Exposed a couple new APIs to create a polymer expression binding outside the
+    context of a template binding.
+  * Updated to depend on latest template_binding and observe. Setting a value on
+    a polymer expression binding now produces a change notification.
+
+#### Pub version 0.11.0
+  * Remove faulty assert that threw when an iterable field was updated.
+  
+#### Pub version 0.11.0
+  * Scopes created by templates are created less often and nested properly. The
+    previous version had a bug with respect to the names visible in 
+    <template releat> tags without an "in" expression, and <template bind> tags.
+    In those templates, names for the outer templates should not be visible.
+    This may result in some breakages in templates that relied on the buggy
+    behavior.
+  * <template bind> now supports "as" expressions.
+  * Removed warnings when attempting to assign a value to a property on null
+    object, or assign a value to a non-assignable expression. Polymer binding
+    initialization sometimes assigns to expressions, so this should reduce
+    unecessary warnings.
+  * Added the % (modulo), === (identical) and !== (not identical) operators.
+  * Fast-path for eval(). eval() no longer observes expressions or creates a
+    tree of observers.
+  * PolymerExpressions bindings clean up expression observers when closed,
+    fixing a potential memory leak.
+  * Better parse errors. Unknown operators are reported, and all exceptions are
+    instances of ParseException so that they can be caught independently of
+    exceptions generated by calling user code.
+
+
+#### Pub version 0.10.0
+  * package:polymer_expressions no longer declares @MirrosUsed. The package uses
+    mirrors at development time, but assumes frameworks like polymer will
+    generate code that replaces the use of mirrors. If you use this directly,
+    you might need to do code generation as well, or add the @MirrorsUsed
+    declaration. This can be done either explicitly or by importing the old
+    settings from 'package:observe/mirrors_used.dart' (which include
+    @reflectable and @observable by default).
+
+  * Errors that occur within bindings are now thrown asycnhronously. We used to
+    trap some errors and report them in a Logger, and we would let other errors
+    halt the rendering process. Now all errors are caught, but they are reported
+    asynchornously so they are visible even when logging is not set up.
+
+  * Fixed several bugs, including:
+      * propagating list changes ([18749][]).
+      * precedence of ternary operators ([17805][]).
+      * two-way bindings ([18410][] and [18792][]).
+
+[17805]: https://code.google.com/p/dart/issues/detail?id=17805
+[18410]: https://code.google.com/p/dart/issues/detail?id=18410
+[18749]: https://code.google.com/p/dart/issues/detail?id=18749
+[18792]: https://code.google.com/p/dart/issues/detail?id=18792