Reset recipient list when reloading configuration

picomon/__main__.py

@@ -66,6 +66,7 @@ def __hangup_handler(signum, frame):
     from importlib import reload
     oldchecks = list(config.checks)
     config.checks.clear()
+    config.emails.to = []  # FIXME: send final mail to removed recipients?
     reload(config.configmodule)
     config.checks.merge(oldchecks)