Skills Mastery [Pufferfish's Skills]

-New xp gain, harder/slower gain curve but instead of only mobs kills now gain xp also by:
*Mining ore blocks (expression value 2)
*Catching a fish in the fishing rod (expression value 5)
*Enchanting books (expression value (2 * enchanting levels))

*large xp amount upon killing:
Evoker (expression value 100)
Ravager (expression value 150)
Elder Guardian (expression value 200)
Wither (expression value 400)
Warden (expression value 500)
Dragon (expression value 600)