macOS compatibility report

current process:

TO INSTALL:
brew cask install racket
brew tap caskroom/fonts && brew cask install font-iosevka
raco pkg install memoize
git clone https://github.com/disconcision/fructure.git


TO RUN:
racket src/fructure.rkt

issues:
1. need to manually create src/saves directory or else crashes (on all OSes?)
2. formatting screwy with default font; find better default?