Just a little update to keep progress going

This update wasn't tested, although it should work. Please inform me via Spigot DMs, Discord DMs or GitHub issues if it isn't working correctly.

Changes:

• [#43] blacklists can now use the term 'ALL' to block all possible values.
• [#53] attempted fix at stopping players from being considered levellable
• [#49] checks if events are cancelled before proceeding. could fix potential issues

File changes:

• Nothing important, just config comments. Didn't increment the file version for this reason
• This means that you don't need to update your config for this update

Cheers for 1000 downloads
Have a good weekend everyone.