Improve branching in cave generation
Add a brief sleep to the music player
Clean up heightmap range problems
Add a final drop to cave generation
add a prototype for text events
Cleaned up book implementation, made them shiny
I don't remember what I changed, but I bet it was worth committing!
Add random objects in the middle of the cave
Add a ton of amazing art! Go Ami!
Defer blitting so we don't draw over ourselves
Add more art, tweak spawn rate