LevelChange & LevelRange spec

LevelChange : Add or remove an amount of level of the pokemon (Can't be less than 1 or more than the level set in the config.)
LevelRange : The level of the pokemon wil lbe choosen randomly between the range ralue specified

List of spec	Example	More info
lvlc	lvlc:+6	Add 6 level to the pokemon
lvlchange	lvlchange:-8	Remove 8 level to the pokemon
lvlr	/pokespawn random lvlr:10-20	Spawn a pokemon between level 10 & 20
levelr	/pokegive Flashback083 random levelr:90-99	Give a pokemon between level 90 & 99