Spegroot RPG

Bug fixes, updates, and most importantly of all, a lag-reducing update:

- Authority Horse Speed now refreshes every 3 seconds instead of every second, reducing lag.
- The Alchemy spell now plays a sound when used.
- The Supernova spell's explosion size was increased from 300 to 500.
- The Unarmed Strength bonus now only activates 120 seconds after death.
- Agility stats now require 20% more movement to gain experience in.
- Agility stats now set values instead of removing them, improving performance.
- Authority riding horses now gives 50% more XP.
- Authority stats now set values instead of removing them, improving performance.
- Nether Quartz now gives 10 more Mining XP per ore mined.