Hotfix - v0.20.85

Hi folks! This is just a quick hotfix build for bugs reported during the rollout of the scenery brush update.

In this update:

• Fixed a floating point imprecision issue which could very rarely cause a piece of scenery to treated as both
• inside* and also
• outside* of a brush stroke at the same time, which resulted in that single scenery item being placed and then removed again within a single editing action, which
• really* confused the game's undo system!
  
• Fixed a very rare placement issue with flight paths, teleporters, and vehicle depots, which could occur if you were playing in a window and clicked and dragged the mouse cursor out of the game window in the middle of placing the
• second* flight point, teleporter, or vehicle depot on a travel path.
  
• Fixed cursor briefly appearing to teleport across the screen when tapping the 'z' key during an object placement.
  

It's a really small hotfix this time! Big thanks to the folks who reported the issues above! Will talk again soon.

-T