Some fixes and improvements

assa t16 4pc should now be properly implemented
typo: instant_poison > deadly_instant_poison, has no impact due to we have no real proc with procs from spells
cd reduce trinket does not reduce cd of vanish, so excluded
fixed ss_per_snd
added ruthlessness to non-anticipation: I added it so that we are always finishing with 5 cps because the complete model is based on this fact, while it would especially under Shadow Blades makes more sense to finish lower instead of wasting CPs. I don't know how valuable Marked for Death is in the 5.4 Raid, but if it turns out to be add or target-switch heavy it should be improved.
fury of xuen scaling changes
fury of xuen and cleave proc are limited to 5 targets. Fury of Xuen hits the Boss + 4 Adds. The Cleave proc can only hit additional enemies and not the current target, but also hits up to 5 targets.