Rite of Returning 1.3.6

Soul Spear update:
- Replaced Soul Spear with Soul Spear (6).bbmodel, copied byte-for-byte.
- Added thrown soul particle trail.
- Added small light soul particles while held.
- Fixed stuck-in-block alignment so model remains centered on projectile hitbox.
- Default throw speed is now 1.0D.
- Soul Spear has its own soul counter.
- Every 200 souls: +1.0 throw speed, max 5.0D.
- Base damage is 10.
- Every 200 souls: +5 attack damage, max 50.
- Added two gem sockets using B and V.
- Keeps custom renderer path, face UV rotation, groups-loader fix, pivot preserve, flat-plane tip fix, projectile alignment, mob bounce/fall, trident tags, and latest Scrapper changes.
