Added:

• Vital Apparatus Vent - A Cube Dispenser, that can be made to dispense much more than just cubes! Right click with a specifically colored/configured Cube or Spawn Egg to make it dispense it!
• Aperture Science Handheld Configuration Device -  A tool for coloring and configuring most things in the mod. Right Click with it to open the Configuration Menu. Shift-Right-Click with the portal gun or another item in the offhand to configure that item.
• PotatOS & Gun Piercing - Portal Guns can now wield a PotatOS on them. Purely decorative. Gun Piercing support any other item to be pierced on them as well. Totems of Undying work while pierced.
• Added a Variant System for ResoourcePack/DataPack-based custom variants to: Pedestal Button, Large Button, Vital Apparatus Vent, Configuration Device, Cube.
• Added Antline Camouflage - Right Click an Antline block with any full block to cover the antline with it, preserving its functionality.
• Added a new Portal Gun Variant - PortalCubed.

Changed:

• Made Large Button and Pedestal Button use the MultiBlock system created for the Vital Apparatus Vent. Simplifies multiblock implementations for the future.
• Reworked the datapack/resourcepack system for custom variants.

And probably a lot more that I forgot of by now! Enjoy!