It fixes:

• Desert Princess eloping scene
• Ghost Princess eloping scene
• Starchy fight during Human Princess questline
• NPCs spawning on the Inn's door in the Clocktown, getting stuck with the Knight.
• Mithril Rings reset function
• Goblin Princess crash during her questline (step 4)
• Slave auction messages looping if you offer too close to the end of the auction 
• Crashes during combat while using Desert or Goblin Princess (or any other party member without a chestpiece. Make sure they all wear something on the chest slot until v0.13.1)
• Messages looping after slave auctions
• Crashes during war declarations
• Panties not respawning correctly in Princesses' rooms
• Animations bugging up when offering progeny to fauna (you cannot offer them to fauna anymore)
• Dragon Princess II scene looping after the adult animation
• Swimsuits quest freezing the game when you get all of them
• Issues with Sphinx Princess / Dullahan Princess events
• Money count bugging up when you go higher than 99999
• Mouse pregnancy announcement featuring Slime Princess instead (for now it fades to black, in v0.13.1 Mouse Princess will have her own scene)

To apply a new patch, empty your "Patches" folder and move the new ".rvdata2" file into it. Patches can lead to memory issues, so we'll stick to little ones. If anything major needs a patch I'll just make a new release. 

Now, about v0.13.1, it shouldn't take long before it's ready, most likely during next week. The main changes (except more bugfixes) will be:

• NSFW Animation #31 (Goblin NPC anal)
• NSFW Animation #32 (Goblin/Bugbear NPC anal)
• Moth Princess "lantern" scene
• Mouse Princess pregnancy announcement scene
• Kobold X Slime "fluff" scene
• Additional dialogues for NPCs in the Forgotten Gardens and Dance Club of Death