BALMUNG minor update

I wanted to show off BALMUNG to some friends, but there were some things about it that I wanted to address first!

• updated TIC-80 to version 0.90.1723.  this comes with performance boosts and fullscreen support in the browser!
• rebalanced adaptive difficulty
  • curse no longer stacks with itself, so the strength boost on death is more gradual
• dialogue box revision!  this is probably the biggest set of small changes.  
  • some NPCs have reworked dialogue
  • the dialogue box shows who you're speaking to
  •  NPCs with multiple dialogue lines now indicate that they have more to say
• very small tweaks to enemies, map, art.  
  • large trees are a bit nicer now!  
  • the mithril golem arena has bones in it!
  • dire imps chase you more quickly
  • and more
• puzzle tutorials?  
  • some of the traversal mechanics were far too obscure, so I added some powerups to the map to try and hint at those mechanics.
• mac and linux builds!
  • currently untested, let me know if they're totally broken

it's pretty much the same game, but I'm happy with the extra polish, and it remains one of my favorite projects to date :)