Update 1.5.4.56

Changes:

• The aiming marker for leading shots has been reworked.
• The aircraft pie-menu, which allows control over flaps, landing gear, and airbrakes, has been added.
• A section "Airplane Control" with a variety of settings has been added.
• A "Leave the vehicle" button has been added for aircrafts to all battle modes.
• An arrow indicating the direction of a target that has left the field of view has been added.
• Added tips on how to repair and replace incapacitated crew members during tank battles.