Additions:

- Added new healer models! Healers can now FINALLY be dyed 16 different colors! It only took a few years, no big deal.

- Added the ability for move relearner NPCs to require items with special NBT data to be present on an item.
Changes:

- Updated all Pokémon's TM moves, egg moves, and level-up moves to generation 7's Ultra Sun and Ultra Moon mechanics.

- Updated to latest Smogon tiers (March 2019)

- Updated the Beast Ball texture for the Overlay GUI (credit to ButteredToastWarrior).
Fixes:

- Fixes Pokémon not saving if there was a crash or you didn't exit the world properly.

- Fixed a bunch of the cascading world generation errors when creating a new world.

- Fixed Pokémon statues floating off into space in UltraSpace.

- Fixed Tidal and Clear Bells causing a crash.

- Fixes gendered Pokémon ending up without a gender.

- Fixed Pixelmon Spawner blocks not spawning bosses or aggressive Pokémon.

- Fixed Chingling not evolving at night. Apparently this has been an issue for a long time!

- Fixed a hack in move learning where you could make it teach any Pokémon any move.

- Fixed a hacking vulnerability in the Pokédex.

- Fixed crashes in Ranch Blocks when the box count is larger than like, 127ish.

- Fixed a possible error when doing a trade where a party has changed.

- Fixed Leaf Stone ore creating blank spaces if you're in Spectator Mode, instead of being like normal stone.

- Changed how Pokémon photos work so they stop turning purple on updates where we add new forms.

- Exp.All can now only have a stack size of one. Fixes some bugs due to it having NBT data.

- Fix some TMs being 'corrupted' due to the moves being renamed.

- Fix Unown not being able to learn Hidden Power via TM.

- Fixed boss Pokémon not being able to go above the max level.

- Fixed /pokebattle starting a 2 v 1 battle with trainer NPCs.

- Fixed a race condition where some party/money/Pokédex data may not sync correctly on join.

- Fixed a crash when using a external move on item frames or other non-living entities.

- Fixed the level-cap and raise-to-cap battle rules sometimes not reverting after battle causing permanent changes to your Pokémon level.

- Fixed trainer NPCs pokemon not getting their items back after battle.

- Fixed trainer NPCs being able to mega evolve more then once per battle. Computers always cheat I tell you!

- Fixed trainer NPCs pokemon not reverting from mega if you ran or lost the battle.

- Fixed a battle crash with trainers that caused the trainer's Pokémon to become wild. Dobby is not free.

- Fixed some Pokémon having Coming Soon as their ability and not the actual ability that will be coming soon.

- Fixed a crash with breeding due to some Pokémon's abilities not being implemented... yet... Soon™

- Fixed a crash if you removed a pokemon from the ranch block while having a search open.

- Fixed being able to add Z-Moves onto a Pokémon via the Pokémon Editor.

- Fixed the mail and badge-case GUIs opening for the host on LAN worlds.

- Fixed special textured Pokémon not displaying the correct sprite.

- Fixed Wingull being exactly as common as Magikarps when you're on a beach. Literally a seagull for every fish in the sea.

- Showdown Import/Export fixes:

    Fixed the importer not renaming moves from the old names to the new, causing import errors.
    Fixed the importer/exporter not handling Alolan forms correctly. Showdown called them Alola forms; we call them Alolan forms.
    Fixed Meowstic trying to export its gender as if it were a form.
    Fixed the Pokémon exporter exporting Coming Soon as the ability and not the real ability.

- Battle fixes:

    Fixed Solar Blade not being a 2 turn move.
    Fixed battles not taking into account Pokémon type changes from moves like Soak.
    Fixed a visual bug where PP restoring items did not update the remaining PP in battle.

API/back-end (for sidemodders):

- Added PokedexEvent for detecting and cancelling Pokédex updates.

- Added UseBattleItemEvent so you can make item usage do nothing during battles.

- Removed battle temporary movesets out of the Pokemon class as it's not really API.

- Fixed BattleEndEvent giving incorrect results if the full heal battle rule was enabled.