Greenery🌿

Merged pull request by @MasterEnderman in #31.

• Added a new config option for disable printing debug messages to the log file
• Defining drops now allows:
  • using metadata -> use <resource_location>:<meta>; example minecraft:wool:5,
  • using oredicts -> use ore:<oredict_name>; example ore:plankWood.

Added "Override Other Bonemeal Events" config.

Added isReplaceable JSON config.

Implemented a safer way of loading and unloading generators. (Fixes #30.)