XS Mechs - Vehicle Edition 1.16a

took some time off from adding rho to do a bunch of fixes

critical fix - Starbound crash with Access Violation Error using old chars that had old tech quests (thanks @Banefiend )
fix - ronin & theta beams look like actual beams, not steps
fix - sigma + elite sigma jump height
fix - holding Down + pressing Jump allows mech to drop through platforms
fix - pilot is invulnerable ('godmode' until i add mech damage) (@Arra ,...

4 down, 2 to go

add - Ronin Rho mech - animations/sounds/projectiles

known issues:
can't read shiftkey keystate, so hold "up" key to run instead (only on ground)
the laserbeam is not angling the pieces right, looks wonky but works fine (same problem as Theta)
friction while hopping forward+back is too high, doesn't move as far as original

more destructive goodness!

add - Theta mech functional - all sounds, animations etc.
change - Sigma walk sounds fully restored
change - characters become nude when entering mechs, to hide any large armor pieces / light sticks - if you have big hair it might still stick out
add - mech despawn animations - mech closes pilot seat and stands up, then despawns when putting away in the vehicle controller

Theta Mech issues (some things even i can't fix )
- railgun beam parts aren't at the...