[1.21] DeathLog - 0.4.0

This release primarily constitutes a port to 1.21. However, due to the large changes necessitated by the game, DeathLog now uses a different database format and old databases no longer work. Further, because some content (like enchantments) is now stored per-world, DeathLog on the client now also stores an individual database for each world/server you play on.

As a consequence of these sweeping changes, there are no guarantees of this build being especially stable - if you encounter any problems, please report them.