Dart 2 fixes

• Breaking change: Added generics to RpcClient.invoke(). Proto files must be rebuilt using Dart protoc_plugin version 0.8.0 or newer to match.
• Dart 2 fixes.

Better hashing for lists

• Fix hashing for PbList.

More Dart 2

• Fix type in PbList.fold() for Dart 2.
• Small performance tweaks for DDC.

Performance and Dart 2.0

• Added fast getters for common types.
• Only pass index instead of both tag and index to accessors.
• Delegate more methods to underlying list in PbList.
• Small fixes for Dart 2.0.

Enum values

• Added enumValues to FieldInfo. Fixes #63.
• Small performance optimization when deserializing repeated messages from JSON.
• Type annotations for strong mode.

Prepare for Dart 2

• Use real generic syntax instead of comment-based.
• Support v2 dev SDKs.

JSON parsing of unknown enum values

• Unknown enum values are now ignored when parsing JSON, instead of throwing an exception.

0.5.3+2

• Resolved a strong-mode error.

fixed binary protos using dart2js

• all tests pass for binary protos using dart2js

Mixins, performance

• make PbMixin constructor public for use within protoc plugin
• improve operator== performance
• drop dependency on package:crypto