Version 0.5.1.54 (EA Beta)
* Improvements
- adjusted supply management windows' visuals
- added version comparison
- added removing outdated contracts from the contract list
- added airport entrance
- outside roads skins change with eras
- collapse/expand button for all on-demand flights
- adjusted new game camera position
* Bug fixes
- fixed sunken vehicles for comet4 and Caravelle
- fixed ramps don't update status if the plane limit is reached