• Python 2: Using the blocking API at import time when multiple greenlets are also importing should not lead to LoopExit. Reported in issue #728 by Garrett Heel.
• Python 2: Don’t raise OverflowError when using the readline method of the WSGI input stream without a size hint or with a large size hint when the client is uploading a large amount of data. (This only impacted CPython 2; PyPy and Python 3 already handled this.) Reported in issue #289 by ggjjlldd, with contributions by Nathan Hoad.
• BaseServer and its subclasses like WSGIServer avoid allocating a new closure for each request, reducing overhead.
• Python 2: Under 2.7.9 and above (or when the PEP 466 SSL interfaces are available), perform the same hostname validation that the standard library does; previously some cases were ignored. Also, reading, writing, or handshaking a closed SSLSocket now raises the same ValueError the standard library does, instead of an AttributeError. Found by updating gevent’s copy of the standard library test cases. Initially reported in issue #735 by Dmitrij D. Czarkoff.
• Python 3: Fix SSLSocket.unwrap and SNI callbacks. Also raise the correct exceptions for unconnected SSL sockets and properly validate SSL hostnames.
• Python 3.5: Add support for socket.sendfile.
• Python 3.4+: Add support for socket.get/set_inheritable.