Fixes:
- config flow pygtfs issue when setting up/refreshing local stop entities
- coordinator backfired when a stop was not presented from the db, e.g. when no departures today
- incorrect display of trips 'today' with a departure time 'today' but which are actually 'tomorrow', addresses; #163
Feature:
- local stop entities that show 'tomorrow' departures now also show their realtime departures, if provided; before these were hardcoded as 'tomorrow'