step value.  Patch by Marcin Bachry.

callable to include the repr of the invalid object.

:class:`zipfile.ZipExtFile` class used to represent files stored inside
an archive.  The new implementation is significantly faster and can
be wrapped in a :class:`io.BufferedReader` object for more speedups.
It also solves an issue where interleaved calls to `read()` and
`readline()` give wrong results.  Patch by Nir Aides.

Issue #7766: Change sys.getwindowsversion() return value to a named tuple and add the additional members returned in an OSVERSIONINFOEX structure. The new members are service_pack_major, service_pack_minor, suite_mask, and product_type.

Fixed #7748: now upload and register commands don't need to force the encoding anymore : DistributionMetada returns utf8 strings

dtoa.c fix from upstream that fixes incorrectly rounded results for certain subnormals that are also halfway cases.

this fixes the first bug described in issue #7743.

Increased the overflow value on test_dealloc to make sure that it is big enough even for wide builds.