Update pool: check if process.pit is None in on_process_exit()
Add signals.base.reset(): empty SIGNAL_HANDLERS
Fix signals.base: avoid signum key with empty list of handlers
Fix signals.process
Fix signals.registry
Update utils.wait()
Fix tests.signals.test_base: move to pytest
Fix tests.signals.test_process: replace os.waitpid() by os.wait()
Update test_pool: refactoring
Fix test_process: refactoring
Update process: do not modify the Process instance from ProcessOpen
Update process: use signals.process to bind signals
Update process: add Process.exit() method
Fix Process.wait()
Fix Process.is_alive