Makes changes to the main indexes of SuperTux versions 0.3.5, 0.4.0 and 0.5.x to fix errors, occuring in almost all addons. Reverts to old versions of them.
Also:
Makes a copy of the addon "The Frozen Mountains", so it has both an old version ("v1") and a new one ("v2").
Removes the addon "Serano's Islands" from the 0.5.x index, because it doesn't work on those versions.
Makes changes to the main indexes of SuperTux versions 0.3.5, 0.4.0 and 0.5.x to fix errors, occuring in almost all addons. Reverts to old versions of them.
Also: