Add spawn fields sizes can be changed in config file

Add autosave to plugins data, time can be change via config file

Fix memory leak on removing mobs

Improve plugin data save mechanics - now save is execute only if there are any changes. Also before save there is created backup file, which is removed after successfull save.

Implement new light system (still disabled because of lags)

Balance:

• Health and mana are now regenerate 2 times faster

• Can use item every 0.5s

• Can cast non-offensive spell every 0.5s
  
  

Update spigot engine