* Remove `SIGUSR2` from `TERMSIGS_DEAULT`
* Add on_ready_counter to Worker.__reduce__.
* Adapt for logging lock internal changes in Python3.13
* blacksmith.sh: Migrate workflows to blacksmith
* Prepare for release: v4.2.1
* fix#314
- Pass arguments when wrapping sys.exit (#275)
- Remove win32/py2k special (#276)
- Fix compatibility with Python 2.7 on Windows (#283)
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-billiard?expand=0&rev=58
