Update plugin.yml version to 1.2.0 in preparation of the next release
* Added events when for going on duty (which is Cancellable) and for when having gone on duty, so other plug-ins can react and interact with OnDoOdy.
* Improved error messages when going on or off duty fails.
Remove accidentally left-in debug message
Update version number in plugin.yml for release
Importing 1.1.1 bug fix into master