Added option to disable worlds so when a player types /sfly in that world they can not use it.
If you are updating from an older version you need to add this to your config:
Code (Text):
# Worlds where players can not enter SafeFly mode.
DisabledWorlds:
- world1
- world2
# Sent to a player when they are in a world that they can not use SafeFly in
WorldIsDisabledMessage: '&cYou can not enable SafeFly mode whilst in this world.'