Teeny update

A few small changes added:

Decorations, Added strategic antenna and dish piece to a conversion dictionary to retain any decos that used the old meshes. This would need to be applied to an old blueprint saved prior to 3.8.0.

Collision Avoidance, Changed defaults to 5 and changed increments to 0.1.

Collision Avoidance, Added warnings to routines that may be affected by collision avoidance to check collision avoidance settings.