Spelunkcraft (Spelunky Mod)

Another bigger and more substantial hotfix push, this time fixes several bugs, fixes hardness issues and ups/balances worldgen stuff to make the mod more pleasing/easier to play.

Changelog:
*Fixed bug with curse of undying setting negative hunger/saturation levels
*Adjusted world-gen stuff, dirt less common, gem ore/crates/flareboxes are now more common (in return, chests somewhat nerfed in spawn rate) and traps are now more balanced in spawn rate (so no more cheap deaths from unseen powderboxes/spikes/etc)
*Adjusted some custom-model block hitboxes, like for rocks/pots, should be closer, height-wise now
*Made crates/flareboxes/bomb boxes etc explosion resistant so you don't have to worry about losing them and their potential contents from accidental explosions
*Fix for vault blocks having wrong hardness
*Adjusted the arc of thrown items without pitcher's mitt to be less severe and more predictable
*Structures to be a bit more common
*Fix for broken/wrong hardness value on certain blocks/fixes for block functionality with mining/drops/etc
*Fix for spikes destroying items and items triggering their sound
*Fix for rocks/skulls sometimes not dropping their projectile versions
*Items will not longer play unique pickup sounds (i.e gems) if the inventory is full