bump to 3.5.2
bump to 3.5.2

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