Log Message:
Update to 0.79

Upstream changes:
Changes for version 0.79 - 2021-08-06
CHANGES
Permit IO::Async::Routine or Function by module+func names instead of CODE reference
Added new Routine/Function model of `spawn`
Implement IO::Async::Resolver by module+func rather than code
BUGFIXES
Require Socket 2.029 on MSWin32 because of AF_UNIX fix (RT133018)