Add full support for Repository Status Hooks
Add full support for Repository Status Hooks

bwu-dart-contributing/github.dart,marcojakob/github.dart,marcojakob/github.dart,marcojakob/github.dart,kasperpeulen/github.dart,kasperpeulen/github.dart,bwu-dart-contributing/github.dart,kasperpeulen/github.dart,bwu-dart-contributing/github.dart,kasperpeulen/github.dart,bwu-dart-contributing/github.dart,marcojakob/github.dart