Changes between #6 and #7

#7 (Dec 11, 2018, 4:27:23 AM)

1. Add support for Spigot 1.12 (untested) (commit: 3a67c72) — antony / detail
2. Excessive yak shaving to support different versions of 1.12.x (commit: d8794c9) — antony / detail
3. Improve version detection mechanism. (commit: 3a63470) — antony / detail
4. Make world UUID based on world name rather than generating a new one for (commit: 1ca7522) — antony / detail