Re-word what a break does
Add break
Allow break to be invoked from bin script
Update reference to state diagram
Remove log event. It is too early to add it.
Separate pom and break into distint resources

Each has its own state machine.
Fix unit tests to reflect pom/break separation
Rename controllers to plural
Update exit status
Fix scheduler to enqueue break or pomodoro
Add tests for length
Rename env variables from POM_* to PAR_*
Update templates
Extract the name of the bin script