Add Issue Comment Deletion
Add Issue Comment Deletion

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