Fix encoding and safety catches for two logs of bridge IDs in Bridges.py.
Fix missing import of logging module in Bucket.py.
Fix unhandled exception due to _reloadFn() not taking parameters.
Add a SIGUSR1 signal handler for dumping bridge assignments.

 * FIXES #10811
Update help text in commandline options menu for using signals.
Merge branch 'fix/10811-add-SIGUSR1-handler' into develop
Update CHANGELOG with details of 0.1.1 and 0.1.2.
Merge branch 'release-0.1.2'
Merge branch 'master' into develop