[#1732] Fix bug which lead ChannelTrafficShapingHandler stop to work after first Channel was disconnected
[#1733] Correctly pass the promise to the ctx.write(...) in AbstractTrafficShapingHandler
use Promise instead of CallbackNotifier
resource leak: FileInputStream was never closed
[#1481] Add a JdkZlibDecoder which has no dependencies
SPDY: ensure channel close happens after outbound message is written
[#1743] Fix IllegalStateException by remove usage of PendingWrite in ChunkedWriteHandler. This needs more thoughts before re-introduce it
remove unused initialCapacity
add struct to replace parallel arrays consolidate flushed & unflushed buffers