Support for geventhttpclient

[sboisson]

Network calls from geventhttpclient which use native gevent API are not intercepted by HTTPretty

[mindflayer]

Hi there, I am the author of mocket, which supports gevent and has a compatibility layer for using it the same way you use HTTPretty. You could give it a try: https://github.com/mindflayer/python-mocket/