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z - Astro's Stellaris Overhaul - Space Exploration

This mod is intended to make exploring space more fun and interesting, and maybe also a little more mysterious.
Note: Should be compatible with virtually any other mod that doesn't edit vanilla anomaly/precursor events or mess with vanilla sensor game rules.
- Updated for 3.13.x compatibility
- Removed the Space Storms event since now we have Cosmic Storms.

• New Precursor - the Xel'Naga (from the Starcraft universe)
  
• Removed the null spawn chance from anomalies, so they have a higher chance of happening at least once.
  
• The AI will research precursor anomalies now (and may beat you to the precursor homeworld!).
  
• Takes longer to survey celestial bodies.
  
• Planet hyperlane detection range decreased by 1.
  
• First Contact time increased.
  
• Space monsters more likely to wander, and more likely to wander farther.
  
• Takes longer to research anomalies.
  
• Higher chance of finding anomalies.
  
• The following celestial bodies now also block sensors:
  -- Wormholes
  -- Neutron Stars
  -- Pulsars
  -- Black Holes
  
• You can now get multiple precursor event chains simultaneously (and so can the AI!).
  
• Observation station events are more likely to happen.
  
• Made the unexplored part of space (terra incognita) darker, so you can't see all of the stars until you can see the hyperlanes to them.
  
• Added new anomalies.
  
• AI can now potentially get the Rubricator anomaly.
  
• Added a Precursor catch-up event for AI so that the player is less likely to complete multiple precursors.

• common/anomalies/*.txt: Many anomalies
  
• common/defines/00_defines.txt: Some defines
  
• common/game_rules/00_rules.txt: the sensor blocking game_rule
  
• events/various: precursor and observation events.
  
• gfx/FX/terra_incognita.fxh

I used some content from the following abandoned mods:

• Krajzen's Planetary Modifiers Extension (last updated 20160509)
  
• luna's The Fallen (last updated 20190102)