Issue #20667: KqueueEventLoopTests.test_read_pty_output() hangs also on OpenBSD 5.5.
Issue #20564: Skip tests on lock+signals on OpenBSD
Close #20649: Fix typo in asyncio doc. Patch written by Brett Cannon.
Issue #20656: Restore explicit downcast in select_select().

Cast from time_t (64 bit) to long (32 bit). It should fix a compiler warning.
Issue #20493: Document that asyncio should not exceed one day