Now released for both 32bit and 64bit Cygwin:

Notable changes:
UCRT updates by Biswapriyo Nath
Wine updates by Jacek Caban
Various new and updated API headers by Biswapriyo Nath and Liu Hao
Various UCRT and MSVCRT fixes by Martin Storsjö
at_quick_exit implementation by Martin Storsjö
dism API by Biswapriyo Nath
idl fixes by Steve Lhomme
Winpthreads fixes by Liu Hao
gettimeofday precision increase by Christian Franke

Other changes:
_WIN32_WINNT is now set to Windows 10 as default.
time_t is now 64bit by default on 32bit UCRT.

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