CoAP server with Rack interface.
Rack 2 (and Rails 5) support.
Explicitly depend on celluloid < 0.17.
Relicensing to MIT.
Repaired message ID generation on observe notifications.
Fixed regression regarding to blockwise transfers.
Several bugfixes.
Architectural redesign, performance improvements, incoming JSON/CBOR transcoding, CoAP return codes from Rack app and other fixes.
First stable release.