Update in-line with POM
Reject requests when channel is disconnected
Merge branch 'reject-requests-when-disconnected' of https://github.com/ljcoomber/amqp-client into ljcoomber-reject-requests-when-disconnected

Conflicts:
	src/main/scala/com/github.sstone/amqp/ChannelOwner.scala
	src/test/scala/com/github.sstone/amqp/ChannelOwnerSpec.scala