Ultimate Progression: Sky

- added mods:
  - Rubidium
  - Textrue's Rebidium Options
  - Magnesium / Rubidium Extra: Potato Edition
  - Better End Potato Edition
  - Snow Real Magic Potato Edition
  - experience obelisk
- removed mods:
  - BetterEnd (Forge)
  - Snow Real Magic (Forge)
- updated mods
- disabled potion stacking from charm, fixing the Potions Brewer from Industrial Foregoing
- updated main menu
- fixed duplication glitch for iron using the uncrafting grinder
- increased blaze powder drop chance: 15% -> 25%
- added Gravel -> Sand milling recipe
- added Recipe to make chisel limestone
- increased superheated blaze burner heat multiplyer to 12x

- fixed a duplication glitch with exnihilo barrels (only on new worlds)