Music Disc Madness

A unified loot table featuring most of the new music discs is now used in lieu of a regional based loot table per every structure, with the sole exception of villages. Exclusive music discs tied to certain structures, such as trial chambers or ancient cities, are not affected.
Due to the above, a rebalancing of music discs has been done. Music discs are a bit rarer to come by now from chest loot.
Added 8 new advancements; these are used to signify how much of a soundtrack's OST you have (e.g. how many Volume Alpha music discs have you collected so far). "11", "boss", and the main menu music are excluded from the count, the former two due to the lack of an OST release for these tracks, the latter due to how they are obtained following the collection of all music discs.
The titles of each music discs are now located under en_us.json. This enables the translation of music disc names if necessary. The same goes for advancement titles and descriptions

Music Disc Madness v2