+ Fixed an error caused by boss bars.
+ Fixed boss bars going back instead of filling up.
+ Fixed multiple boss bars appearing (for real this time).
+ Fix errors that happen when you update the server to a newer version
+ MySQL improvements (by jascotty2 on Github, thank you!)
+ Recipe setup when the player first joins improved so the server will barely lag
+ Background code improvements for version checking
+ Fixed parrot and llama heads not loading in 1.14

Was meant to add a new feature but issues regarding compatibility (and being tired from exams) stopped me, so that'll come sooner or later.