Added option to ignore natural spawners, making them work just as in vanilla.
Changed the default checking interval value from 1 to 2, this will slightly improve server performance (Does not update for already existing files).
Fixed regular spawner location finder spawner mobs on the first found locations.
Oprimised spawner location validation.
Added option - cache-spawn-locations
If enabled this option will use spawn location caching improving the performance while using more memory. This option is useful if your server has spawners that spawn often and are changed very rarely.
Added options to enable placed spawner item name and lore saving. This will set the name and lore back to the item when the spawner is broken.
Minor API changes and optimisations