Fix multiple calls to dispose in FragmentationDuplexConnection, allow…

… fragmentation to be disabled until leaks are fixed

in the frame check to see if content isn't null before trying to recy…

…cle it (rsocket#519)

Use ReferenceCountUtil.safeRelease instead of release (rsocket#505)

Fix a few potential leaks (rsocket#504)

Merge pull request rsocket#502 from nebhale/498-maven-dependencies

Maven Dependency Improvements

Merge pull request rsocket#497 from nebhale/bintray-maven-central

Upload to Bintray and Maven Central

Simplify RSocketClient/Server implementation and avoid unnecessary fl…

…atMap (rsocket#467)

Replace IntObjectHashMap with NonBlockingHashMapLong (rsocket#459)

Replace IntObjectHashMap with NonBlockingHashMapLong (rsocket#459)

Replace close() method with dispose()/isDisposed() (rsocket#456)