- removed euler branch in favor for a 'better solver to come'
- removed some debug vars from lattices
- removed some garbage related to 'borrowing' collision from particles
note SB collision is completly decoupled from particle stuff to allow
: 1. SB collision targets can be 'anything evaluated by modifier stack' but won't be subsurfed (for performace reasons / possible though / see comment in code)
: 2. SB <-> SB collisions
: 3. ( 1. implies that SB collision targets may be animated, hooked, curve deformed , .. ! )
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