Added @Rakiov's brilliant NUI spellcast system & power attack GUI.
Fixed incorrect constants for Charming the Arrow and Investigator.
Updated loadhints.2da.
Updated all ToB maneuvers with saves to respect Blade Meditation.
Added HasBladeMeditationForDiscipline()
Expanded Witchborn Binder for epic progression.
Fixed a few bugs around Vile Martial strike.
Echo Spell shouldn't target self or items.
Muckdweller should have a -6 STR.
Added new Vile Martial feats to GetVileFeats().
Grappling something now removes invisibility.
Started on Power Attack NUI.
Starmantle shouldn't stack.
Factotum & Shadow Thief of Amn require UMD checks for scroll casting.
