v 1.4.4, 1.21 support

Add backwards support by lowering api minimum to 13, java target 1.8

1.4.2 - World and coordinates placeholders, fix some replace edge cases

- Version 1.4.2

- The world and coordinates of a killed dragon can now be included in
the kill reward commands. Issue #2

- Use replaceAll instead of replace for filling placeholders

1.4.1 add to reward percent based on crystals destroyed, build Java 17

1.4.0, Add xp reward system

Show world name in the settings command

1.3.1 - New scoreboard sorting system, shouldn't affect anything

1.3.0 - Crystal kill count placeholder %crystals%, api 1.19

1.2.0 Dmg and kill rewards, replace placeholders in more messages

1.1.0 - Option for world only messages, api-version drop for 1.17