Update v0.5.bf6f65b

This update includes a variety of AI fixes, a few physics fixes, and some new objects and object variants! [h1]Gameplay & Performance[/h1] [list] [*]AI now calculate the fuel they need to finish in a more "human-like" fashion. [*]Adjusted tyre wear calculation to reduce AI advantage. [*]Improved the low-speed turning behaviour of the Drift and Lightning. [*][b]FIXED:[/b] AI no longer drive through the pits on the last lap unnecessarily. [*][b]FIXED:[/b] Edges of bridge models now cause significantly less "bouncing". [*][b]FIXED:[/b] AI should no longer have a disadvantage in certain grid slots (hopefully). [/list] [h1]Track Editor[/h1] [list] [*]Added new coloured variants of the various armco barriers. [*]Added a new Chain Link Fence object. [/list] [h1]Known Issues[/h1] [list] [*]The main menu sometimes experiences distortions or other rendering issues - changing resolution, or restarting the game may rectify the issue. [*]Occasionally, when in Windowed mode, changing the language multiple times in quick succession can shrink the game window. [/list]