Sans AUs (Discontinued)

Update Changelog:

-Updated Sans' texture
-Updated Sudden Changes' texture
-Slightly reduced the time it takes for Horrortale Sans to use hunger mode (1700 -> 1600)
-Slightly increased the chance for Sudden Changes to use the moving back ability (+0.0005)
-Updated Sudden Changes' moving back ability
-Updated Horror Sans' spike ability
-Updated Horror Sans' slash effects
-Added Horrific Catalyst (Summons Horror Sans)
-Added Sudden Challenge (Summons Sudden Changes)
-Horror Axe now triggers effects below 25% health
-Updated Sudden Changes' bullet texture
-Fixed Sudden Changes not using the bullet surround on the target