This release breaks backward compatibility.
Test case by Martin Traverso.
NettyAsyncProvider optimization: avoid invoking onStatusReceived and onHeadersReceived multiple time per transaction
Patch provided by Jenny Loomis.
Patch provided by Jenny Loomis.
Patch provided by Erwan Loisant.
Patch provided by felixtrepanier.
Test case and a fix provided by Michael Pilquist.