MINI AIRWAYS DEMO Update - Map "WASHINGTON" arrives!

Dear Air Traffic Controllers，

We have an update in our demo.

[Change]

• Added new map KDCA: Reagan Washington National Airport.

• Added a new airspace mechanic which only allows aircraft to pass the airspace from one side and not the other.

• Added a new upgrade choice "NAVIGATION WAYPOINT".

• Added new tutorials for "RESTRICTED AREA", "MOUNTAINS" and "GO AROUND".

[Bugfix]

• Fixed some known aircraft control issues.

• Fixed a bug where the manual time control is allowed when the upgrade panel is showing.