Beta release 5

Fixed sub expiration calculation bug

Beta Release 4

Fixed caching bug, some other cleanup after updates for handling bans and account changes.

Improved unit tests for caching scenarios

Beta release 3

Added ipaddress to api calls, and error messages + handing for new rules, fixes #4 and #3

Beta Release 2

Adds support for trusted users.

Some improvements to player listener initialization that fixes a startup bug.

Beta Release 1

Adds the ability to use an external REST API for whitelisting users as documented on https://github.com/destinygg/MCWhitelist