Version 0.8.20 - Hotfix

Hey!

A quick hotfix, fixing the player 3 and player 4 instant exploding when trying to start a new game.

Also; workshop maps should now be available again, but you might need to refresh and convert!

Changelog:

• Changed how map borders, floor types, and weather stuff are stored (more efficient), so if you notice anything weird with loading/playing a map, please report it
• Fixed artboard becoming unusable on low graphics
• Fixed old maps are shown at bottom of the map list
• No more mass error spam
• Debris from explosions doesn't change to brown tank when falling on the floor
• Player 3 and 4 , should not blow up anymore