-Couple of 11th hour minor fixes caught in a QA pass.

-Squashed the last of the bugs (all hail PBR)
-Added cover art from original BtP (thanks HR!)

Few more fixes.
At this point, if there is a bug/problem, assume I do not know about it. There are two minor things I'm trying to track down, but they should neither be visible to the player nor cause crashes.

Second stage of Beta testing.

Only remaining work left to do should be nudge/positions.txt and a couple loose ends that need to be tied up. Needs playtesting.

Working beta test upload for testing purposes

Work remaining:

• prov_names_l_english.yml using Beyond Typus names, revert to vanilla
  
• prov_names_adj_l_english.yml using Beyond Typus names, revert to vanilla
  
• positions.txt
  
• climate.txt & terrain.txt using Beyond Typus "improvements" revert to vanilla
  
• Any fix needed to improve how BtP works in 1.17? Like regions or something?
  
• Speaking of regions, still as Beyond Typus, need to revert
  
• May have missed something? I'll look better when we finalise some stuff.
  
• Bug finding (I threw this together in 30 minutes... there will be bugs, giant bugs, crashing bugs, green bugs, red bugs, blue bugs, carnivorous bugs, and ladybugs)

Issues with uploading, didn't work, I'll try again