Major changes
- Added markers display for flight start (FS), each timer start (LS) and timer end (LE), fuel tank change (TC) and flight end (FE).
- Added digital display of the flight duration
Major bug corrected :
- Sometimes callouts are not generated when a leg is activated (happens if PgWAlarm has never been opened before the watch screen turns off. If PgWAlarm is run once
before the callouts, the callouts will be executed properly)