Changes for dart-sdk 29341 (import convert instead of json, int->Int64 conversion), fixes issue #10
Add show JSON to convert import
Use Int64() constructor
dart:utf -> dart:convert transition
Fix warnings and update to SDK 0.8.7
Bump version. Remove unneccessary Uint8List creation.
Make GeneratedMessage abstract
Merge pull request #15 from dart-lang/justin-work

Update to SDK 0.8.7 and fix warnings