Massive quality-of-life and maintenance upate. Version updated to v0.6.
Added support for SQLite, for those without access to SQL servers. Yay!
Revisions to database connection code, increasing resilience to failure.
Changed previously SQL-only DATEDIFF function to in-Java calculation.
Revised table format to support SQLite.
Fixes to the player UUID support code.
Uploaded the sample config, which was somehow lost.