certificates from default stores or system stores. By default the method
loads CA certs for authentication of server certs.

tracemalloc.start() now has an option nframe parameter

The patch removes the verify_flags feature on Mac OS X 10.4 with OpenSSL 0.9.7l 28 Sep 2006.

    XZ 5.0.3 -> 5.0.5
    SQLite 3.7.13 -> 3.8.1

The codecs themselves were restored in Python 3.2, this
completes the restoration by adding back the convenience
aliases.

These aliases were originally left out due to confusing
errors when attempting to use them with the text encoding
specific convenience methods. Python 3.4 includes several
improvements to those errors, thus permitting the aliases
to be restored as well.

Revert utime(..., None) strategy (it has too poor resolution under Windows) and restore the previous test workaround
(issue #19715)

in test_pathlib.

Purposefully designed to work from a specified directory in case
multiple file systems are used on the system.

Only possibly-controversial change: joinpath() was described as:

  "Calling this method is equivalent to indexing the path with each of
  the *other* arguments in turn."

'Indexing' is an odd word to use, because you can't subscript Path or
PurePath objects, so I changed it to "combining".