Plugin Changes:
- Added SQLite and Postgres database support
- Made SQLite the default database type
- Added configurable `%claimed%` placeholder for use in gui item templates
- Rewrote data storage implementation and improved database error handling
- Added new "confirm-command" message in replacement of old separate confirm command messages

Bug Fixes:
- There are multiple minor bug fixes in this version

Upgrading:
It is recommended (but not required) take a backup of your user data and reset your `storage.yml` when updating to this version.