* [Quest API] Default ScaleNPC to always scale.
# Notes
- ScaleNPC will now always override stats, with the option to override special abilities.
* Update npc_scale_manager.h
# Perl
- Add `$npc->ScaleNPC(level, always_scale_stats)`.
- Add `$npc->ScaleNPC(level, always_scale_stats, always_scale_special_abilities)`.
# Lua
- Add `npc:ScaleNPC(level, always_scale_stats)`.
- Add `npc:ScaleNPC(level, always_scale_stats, always_scale_special_abilities)`.
# Notes
- Allows operators to not have to set stats to 0 in order for scaling to kick in when scripting.
- Special ability override is separate in case you don't want to override some inherent special abilities the NPC has from a script or otherwise.
