Add support for explicit class deprecations
Add support for explicit class deprecations

lookout/protobuffy,localshred/protobuf,film42/protobuf,quixoten/protobuf,zanker/protobuf,lookout/protobuffy,quixoten/protobuf,ruby-protobuf/protobuf,zanker/protobuf,brianstien/protobuf,ruby-protobuf/protobuf,film42/protobuf,brianstien/protobuf,localshred/protobuf