Bump version 2.8.0.beta6
Bump version 2.8.0.beta6

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