test support of python3.4
skip bundle/master on 3.3 on travis

3.4 should be enough
avoid 'During handling of the above exception…' on failed import

use Python 2-compatibly syntax for `raise Exception from context`
generate darwin/platform.hpp on 10.6

removes TCP_KEEPCNT and TCP_KEEPINTVL from bundled libzmq, which are new on 10.8 or 10.9.
use pushstream.send in test_auth

avoids hang if POLLOUT is never set on self.server (4.1.0)
workaround bug in 4.1.0

zeromq/libzmq#1052 makes it impossible to cleanup contexts
support ssh multiplexer in tunnels
Fixes issue #552.
protect ssh command replacement
update authors
What’s new for 14.3.1
update copyright and headers
add extra tags for darwin wheels
release 14.3.1
add invoke script (used to build 14.3.1)
back to dev
make monitor test more robust

on freebsd the socket connect is not delayed and succeeds immediately
Adds utility for fixing CTRL-C on Windows.
Added SOCKS_PROXY constant
Made the ping/pong example Python 3 compatible