Issue #70 Remove thread local at errno
Issue #72 resource leak at Reaper
patch for issue 456 Do not filter out duplicate subscriptions on the XSUB side of XSUB/XPUB, so that ZMQ_XPUB_VERBOSE doesn't get blocked by forwarding devices (as long as the devices all use ZMQ_XPUB_VERBOSE)
Work around for LIBZMQ-496 The problem is that other threads might still be in mailbox::send() when it is destroyed. So as a workaround, we just acquire the mutex in the destructor. Therefore the running send will finish before the mailbox is destroyed.
expose special purpose raw zmq.SocketBase
Remove global errno
Fix issue #76, #77 but at topic remove at trie
Ignore CtxTerminatedException at ZContext.destroy
Merge pull request #73 from miniway/master

Resolving Issue #70 and #72