Optimization update (3.0.0)

# 3.0.0
## Backwards compatibility
- Old qualia: should be safe, but the file format has changed significantly. Back up any valuable qualia before playing. If you modified your pocket qualia, you will need to enter it again for the new optimizations to apply
- Mods: some core changes have been made to saving and loading, so complex mods may break
## Content additions
- None
## Improvements
- Huge save-file optimizations should drastically reduce saving + teleportation time while also reducing the odds of corruptions
- Backups are now created per save-file and recoverable in-game
- Added search bar to firmament embrace menu
- Reduced stutters when moving across chunk boundaries while many robust blocks are loaded
- Greatly optimized fruit seeds and style seeds
- Cached block icons to reduce boot time and likelihood of crashes on low-end devices
- More items now respect modified gravity (bombs, eggs/capsules, dropped items, hearts/balls/boulders)
## Bug fixes
- Fixed being able to clip through egress/cakra blocks by sliding against walls
- Fixed new hand sprites appearing too high up on the screen
- Fixed not receiving credit when killing entities in a single hit
- Fixed crouch toggle triggering while in the inventory screen
## Balance changes
- Ambiguous blocks are now meat-based
- Other rare blocks are now (probably) possible to fuse
- Changed mimic's default block to tungsten