6.0 Experimental Changes

- Complete Proc System Overhaul.
— Data structures are now simplified
— ‘behaviours’ are combined with proc data by default.
— Procs are based on the item level given, not base item level and
upgrade points.
— Redefined proc object stats and methods
- Added buff/aura placeholders for potential WoD mechanics.
- Trimmed marginally useful adv_params. Several modifiers have been
removed.
- Updated scripts to rely on new proc system.
- Broke build ID into two components.

TODO:
- Clean remaining proc system of dead / broken code.
- Verify that all stats are accounted for.
- Combat script runs at ~0.097s now!