Works.
Proto defs.
Initial steps towards supporting protos in streamy.
Basic marshalling/unmarshalling works.
Integrate proto tests into the main suite. Running tests now requires a recent protoc be installed.
Remove pub dependency on protobuf. Eventually we will want to compile descriptor.pb.dart from descriptor.proto, but for now it is checked in.
Add back protobuf - needed for descriptor.pb.dart.
service -> api.
Comments for code review.
Merge pull request #225 from alxhub/proto

Initial, experimental proto support in Streamy.