Allow Portal GUIs

• Updated mod metadata

• Fixed mod version appearing as ${modVersion}

• Updated my email in the mod's metadata

• Updated to 1.21
• Updated the mod's metadata (I've changed my primary email address)

• Updated to 1.20.6

• Updated to 1.20.5

• Changed the license file name (LICENSE -> LICENSE.txt)

• Fixed the game not launching (1.0.5)
• Small code cleanup, mod's behaviour stays the same (1.0.4)

• Updated to 1.20.4

• Updated to 1.20.2.

• Slightly changed the mod's description

The first version of the mod.