8.1.1 release (MC 1.21)

Added

• There is now a JEI category showing which blocks can be used as grid blocks for the Electrostatic Compressor
  • Iron Bars and Lightning Rods by default, but modpacks may add more blocks via the pneumaticcraft:electrostatic_grid block tag
  • The category shows up when you view the uses of any grid block or the Electrostatic Compressor in JEI (right click / 'U' key)
• Added a pneumaticcraft:minigun_ammo item tag containing the six ammo items

Fixes

• Fixed server-side memory leak with drones not correctly unregistering an event handler on removal
• Fixed Refinery sometimes caching invalid recipes (in particular if oil is added before there are enough outputs)
• The Drone Interface is now craftable again (re-enabled the recipe datagen)
• Fixed changes to Aphorism Tiles not sync'ing to nearby players (were only getting sync'd on player login)
• Fixed crash in importing legacy Drone Programs
  • This only occurs when using vanilla launcher (which is also used by CurseForge launcher) since it installs an older version of the Gson library
  • Worked around the issue for now
• Machines with empty tags and/or upgrades should now stack better with fresh blocks of the same type when broken and/or sneak-wrenched
• Fixed Minigun Ammo not being enchantable in an Enchanting Table