Loosened the conditions for precursor sites spawn rules for the Astanine, Coprean and Sless.

The Roots event chain will not trigger for Wilderness empires.

Allowed the Wilderness to terraform the Strange Worlds.

Added built-in compatibility with Endless Frontier: An Event Mod, Expanded Events and Gigastructural Engineering & More.

Added built-in compatibility with Planetary Diversity, Ancient Empire, ACOT, Ethics & Civics Bug Branch and Sensor Expansion.

Better compatibility with Planetary Diversity.

Fixed Baol decision overwrite.

Added new event pictures for some events.
Associated precursor events with their event chains.
Strange Worlds Buildings can now be built on city districts.

Cleanup of unused event pictures.
Tweaked some modifiers.