Update pass on various mods.
Code cleanup.

Updated rules for Machine & Robot Expansion Continued.

Half of the required fix for Arc Furnace and GPM issues.
The full effect of the fix will come with the next update of Planetary Diversity Ascension Worlds.

Fixed the pop assembly and specialist issues.

Code cleanup.
Updated rules and triggers for Wandering Witch: Voyager.

Typo fix.

Code cleanup.
Added planet flags for habitability checks:
merg_is_habitable_planet and merg_is_uninhabitable_planet are checked in habitable_planet trigger.
This goes in complement to the trigger cant_be_colonized in the colonizable_planet trigger.

Added a trigger for standard stars for other modders to use: merg_is_standard_star.
Added a safety check to subterranean civilization's trigger.

Code tweak.

Added 3.12 merged shaders for Real Space, ACOT/AOT and Gigastructural Engineering & More.
Code tweaks.