Bukkit

Initial release.
+Added Force check command /mmcheck
+Added configurable purchase check interval in config
~Fixed in-game messages
+Added debug option
~Fixed config generation bug
+Added IN-Game GUI with /shop
+Added /mmapikey <apikey>
~Changed Commands now /mm <command> apart from /shop
+Added categorys to shop
+Added pagination to categorys and items
~Fixed GUI item adding issue
~Recoded command listener for new command handler
+ Plugin metrics
+ Language
+ Updater
+ changeable shop command
+ changeable prefix
+ Changeable gui icon support
+ Command check support
+ Recent donator signs
~ GUI bug fixes/Improvements
+ Help pages
~ Improve debug
+ Updated the auto updater
~ Corrected a few json errors.
+ Added support for category GUI icons
~ Fixed debug
~ Icon data is fixed (icons like 5:4)
+ Added /mm recent GUI - beta
~ Improved recent donor signs
~ Minor bug fixes.
~ Changed GUI api and improved speeds by up to 10x
~ fixed minor bugs
~ fixed debug on start/reload/restart/stop
~ improvded sign performance
~ Fixed duplication of sign data (Improves start up speed)
~ Performance upgrades
~ Performance upgrades to signs, and general improvements
+ Added the ability to change GUI title colors via config
~ Switched metrics and updater to official bukkit code.
+ More options in the language file.
~ Fixed NPE for recent sign with value larger than available.
~ Fixed loading times for signs on creation, now instant.
~ Fixed signs not being removed from signs.yml and causing extra load.
~ Fixed /mm recent GUI heads appearing as default.
-  Removed uneeded code.
~ Updated code base for 1.9

Its recommend that you delete ALL config files, so the plugin can generate a fresh version else you may encounter errors.