Bukkit

• Added flatfile (yaml) support
• Added new configuration management
• Made configuration updates dynamic
• Added in-game notifications when update-checks are enabled (for ops / players with the proper permissions only).
• Added tracking of online time for players
• Made improvements to the MySQL querying
• Configurations and SQL tables will auto-update!
• Table creation bug has been fixed!

SQLite may have a bug or two I did not notice. It has been noted within the configuration page.

The automatic fixing of the configuration leaves it functional, but it's a little messy. It's a drawback, since I would have to choose between functionality and performance.