Bump version 2.8.0.beta4
Bump version 2.8.0.beta4

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