Issue #13540: Expanded argparse documents to clarify the action API
Issue #20058: sys.stdin.readline() in IDLE now always returns only one line.
Issue #19020: Tkinter now uses splitlist() instead of split() in configure
methods.
Issue #19320: test_tcl no longer fails when wantobjects is false.
test_debug in test_tkinter/test_text no longer fails when wantobjects is false.
#20063: Remove inaccurate/confusing statement about support of 'pop' method.

Patch by Gennadiy Zlobin.
Issue #20067: Tkinter variables now work when wantobjects is false.
Backported tests for Tkinter variables.
Issue #20027: Fixed locale aliases for devanagari locales.
Fixed the wave module testing on big-endian platforms.

array.fromfile() works only with file objects, not io.FileIO instances.
Issue #19422: Explicitly disallow non-SOCK_STREAM sockets in the ssl module, rather than silently let them emit clear text data.
complain if the codec doesn't return unicode
update copyright year
Update copyright dates in Mac plists.
#17282: Document unittest.main defaultTest argument.
closes 16039: CVE-2013-1752: limit line length in imaplib readline calls.
#16039/#20118: temporarily skip failing imaplib SSL test.

The fix the test is testing prevents a DOS attack, and the failure
mode will also prevent the DOS attack, so for now skip the test.
Either the test or the code does need fixing, however.
#1065986: Make pydoc handle unicode strings.

Patch by Akira Kitada.
#1065986: add missing error handler in pydoc unicode fix.
Fixes issue19081: When a zipimport .zip file in sys.path being imported
from is modified during the lifetime of the Python process after
zipimport has already opened and cached the zip's table of contents
it now fstat's the file after opening it upon every attempt to access
anything within and will re-read the table of contents if the .zip file
inode, size or mtime have changed.

It would've been nicer to hold any .zip file used by zipimport open for the
duration of the process but that would be more invasive and add an additional
open file descriptor to all zipimport using processes.  It also would likely
not fix the problem on Windows due to different filesystem semantics.