* Bug: Keep main process alive while terminate event is not set.
0.1.5
* Feature: Run loop as thread so blocking actions in the controller do not influence refreshing of ETCD keys.
0.1.4
* Bug: Removed debug logging
0.1.3
* Feature: Run scheduled jobs in a separate thread * Feature: Rotating backup functionality
0.1.2
* Bug: Fix bug when ETCD can not be reached * Feature: Retry connection to ETCD until timeout * Feature: Added an parameter 'suppress_log_regexp' to start_process to allow for logging messages to be filtered