Fixes issue #552.
Merge pull request #554 from AndreLouisCaron/fix-tornado-docs

Fixes issue #552.
protect ssh command replacement
Merge branch 'ssh-cleanup'
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
Merge pull request #558 from juliantaylor/monitor-test-robust

make monitor test more robust
Adds utility for fixing CTRL-C on Windows.
Merge pull request #559 from AndreLouisCaron/fix-win32-interrupt

Adds utility for fixing CTRL-C on Windows.

closes #100
closes #555
Added SOCKS_PROXY constant
Merge pull request #561 from hoffmabc/master

Add constant to support new sockopt ZMQ_SOCKS_PROXY

closes #561
Made the ping/pong example Python 3 compatible
Removed debugging statement in ping example

There was an extraneous break statement in the example that was committed that shouldn't have.
Add verification of context state in __dealloc__.

If the context is closed but not the deleted and
Socket.__dealloc__ is called by the garbage collector
exception are thrown when executing the _check_rc
function.