New in-game hook : player.statsUpdated to be used by Actor Conditions,
items (and skills in the future) to impact player's stats (AC, BC, AD,
HP...)
Enhanced local variables handling by script parser. Now scope-aware.
Implemented the public vs private scripts system : some game objects
have private scripts, that get executed only when the object itself is
the cause of the event. Included example is a special case :
player.statsUpdated runs the player's actor condtion and equiped items
private scripts that trigger on plyaer.statsUpdated.
Added scripts reference parsing in JSON parsers, hooked to items and
actor conditions.