Initial API for SQL service
Adding a value in the config file caused to lose ConfigFile.

Signed-off-by: William Lebel <lebelwilliam@gmail.com>
Added getFirstPlayed and getLastPlayed to user.
Use Date for getFirstPlayed and getLastPlayed.
Improved getMinAxis() and getMaxAxis()
Don't use an Optional in ItemFrame#getItemRotation
Merge pull request #258 from Aaron1011/rotation_fix

Don't use an Optional in `ItemFrame#getItemRotation`
Merge pull request #254 from greatman/master

Adding a value in the config file caused to lose ConfigFile, hence removing write().
Merge pull request #223 from zml2008/feature/sql

Initial API for SQL service
Fix SQLService javadocs so they can build
Merge pull request #6 from SpongePowered/master

Pull