You can now control which and how many mobs will spawn upon breaking gravestones! The config is heavily commented, also there's a preconfigured default and a preconfigured example you can use.
This version may break compatibility on some systems. If your plugin directory has a folder "spooktober", you will get a new folder named "Spooktober" (capital letter). If that happens, just copy contents of the old dir to the new one, then delete the old folder.
FIX: gravestone placing logic improved, fixes gravestone placement in caves, liquids, the nether
FIX: gravestone breaking effect now better alligned to appear in the center of the block
FIX: fixed capitalisation of the Spooktober directory (MAY BREAK COMPATIBILITY)