• gevent.threadpool.ThreadPool.imap and imap_unordered now
  accept multiple iterables.
• (Experimental) Exceptions raised from iterating using the
  ThreadPool or Group mapping/application functions should now
  have the original traceback.
• gevent.threadpool.ThreadPool.apply now raises any exception
  raised by the called function, the same as
  gevent.pool.Group/Pool and the builtin apply function.
  This obsoletes the undocumented apply_e function. Original PR
  #556 by Robert Estelle.
• Monkey-patch the selectors module from patch_all and
  patch_select on Python 3.4. See #591 .
• Additional query functions for the :mod:gevent.monkey module
  allow knowing what was patched. Discussed in :issue:135 and
  implemented in :pr:325 by Nathan Hoad.
• In non-monkey-patched environments under Python 2.7.9 or above or
  Python 3, using a gevent SSL socket could cause the greenlet to
  block. See :issue:597 by David Ford.
• gevent.socket.socket.sendall supports arbitrary objects that
  implement the buffer protocol (such as ctypes structures), just like
  native sockets. Reported in :issue:466 by tzickel.
• Added support for the onerror attribute present in CFFI 1.2.0
  for better signal handling under PyPy. Thanks to Armin Rigo and Omer
  Katz. (See https://bitbucket.org/cffi/cffi/issue/152/handling-errors-from-signal-handlers-in)
• The gevent.subprocess module is closer in behaviour to the
  standard library under Python 3, at least on POSIX. The
  pass_fds, restore_signals, and start_new_session
  arguments are now unimplemented, as are the timeout parameters
  to various functions. Under Python 2, the previously undocumented timeout
  parameter to Popen.communicate raises an exception like its
  Python 3 counterpart.
• An exception starting a child process with the gevent.subprocess
  module no longer leaks file descriptors. Reported in :pr:374 by 陈小玉.
• The example echoserver.py no longer binds to the standard X11
  TCP port. Reported in :issue:485 by minusf.
• gevent.iwait no longer throws LoopExit if the caller
  switches greenlets between return values. Reported and initial patch
  in :pr:467 by Alexey Borzenkov.
• The default threadpool and default threaded resolver work in a
  forked child process, such as with multiprocessing.Process.
  Previously the child process would hang indefinitely. Reported in
  :issue:230 by Lx Yu.
• Fork watchers are more likely to (eventually) get called in a
  multi-threaded program.
• gevent.killall accepts an arbitrary iterable for the greenlets
  to kill. Reported in :issue:404 by Martin Bachwerk; seen in
  combination with older versions of simple-requests.
• gevent.local.local objects are now eligible for garbage
  collection as soon as the greenlet finishes running, matching the
  behaviour of the built-in threading.local (when implemented
  natively). Reported in :issue:387 by AusIV.
• Killing a greenlet (with gevent.kill or
  gevent.greenlet.Greenlet.kill) before it is actually started and
  switched to now prevents the greenlet from ever running, instead of
  raising an exception when it is later switched to. See :issue:330
  reported by Jonathan Kamens.