Update 0.8.10

Level Editor:

• new asset: Marker with custom title (category: "Basic")

• Selection changes can now be Undo (Ctrl+Z) and Redo (Ctrl+Y)

• bug fix: selection at the level stops working if you change the tool to a regular selection while the other tool's manipulator is highlighted

• bug fix: rocket launcher kill does not count in Area of enemy destruction

• Destructible objects now retain modified materials when destroyed

• bug fix: compilation error if Resettable Group is inside an empty parent

• bug fix: with an increasing ForceField if you uncheck the checkbox

• "Platform on stick" rework

  • added the destructible version

  • the stick has been moved to a separate object for flexible customization