* Added wand alliance. Spells cast with a wand allied to someone who is
not you are half as powerful.
* Expelliarmus changes wand allegiance if a wand was disarmed.
* Informous now has a range that changes with the level of the spell.
* Informous will list the magical effects currently on a player.
* Changed OllivandersPlayerListener.wandCheck return value to double,
from int
* Implemented Elder Wand, doubles the power of any spell if it is allied
with you, if not, then it's power is equal to a wand of your type that
is allied with you. This is given in the kit.
* Implemented config.yml which will carry a list of worlds where the
plugin is active. A empty list means that it is active for all worlds.