Reshuffled files around, c3_scale.c and c4_scale.c are unified, added support for The Catacomb Abyss v1.24 (but without saved games compatibility)
Support for The Catacomb Armageddon is now in. Note that undefined behaviors are expected if using the sky color change debug key combo while the sky color is changing anyway (e.g., a lightning). While the game does not crash now, it may crash later. Related to that, this should be thought of for saved game compatibility in C5/6.
Support for The Catacomb Apocalypse is now in. Comments about the preceding commit for Armageddon apply here as well.