Fix

Adventure, Trying to create/load a "structure" in adventure mode will instead spawn a "vehicle".
Decorations, No longer possible to select other decorations when the mouse is hovering over the UI (this was unintended.)
Rendering, Explosions should no longer end up accidentally occasionally rendering behind the sky layer / horizon layer.
Separator, Built-in shell designs copy into separated vehicles, and shells referring built in designs that are in clips no longer disappear on separation.
Munition Decorator, Removed EMP invulnerability.
Gone to Sea, Fixed character textures in linux.

Add

Blocks, Added 2m and 3m versions of the 4m beam-slope block.