#13510: clarify that f.readlines() is note necessary to iterate over a file.  Patch by Dan Riti.
Issue #17710: Fix pickle raising a SystemError on bogus input.
remove pointless code (closes #17738)
- Issue #17012: shutil.which() no longer fallbacks to the PATH environment
  variable if empty path argument is specified.  Patch by Serhiy Storchaka.
Remove unused import.
Issue #17739: fix the description of SSLSocket.getpeercert(binary_form=True) for server sockets.
Thanks to David D Lowe for reporting.
#17740: fix links to the socket function.  Initial patch by Zachary Ware.
#17766: test_iterlen now works with unittest test discovery.  Patch by Zachary Ware.
#17771: fix typo.  Patch by Andriy Mysyk.
#14735: Update IDLE docs to omit "Control-z on Windows".
Fix issue #17707: multiprocessing.Queue's get() method does not block for short timeouts.