Bukkit

v0.5
- Fixed bug: sometimes not having permission to promote/demote
- Fixed bug: sometimes "no permission to promote", is printed as "no permission to demote"

v0.4:
- Suffix support added
- Message format option added
- Fixed bug for %: no more errors spawn when % is used in chat or prefixes.

v0.3:
- Prefix support added

v0.2:
-Worlds are inheritable now
-Improved performance