So that it's more printer-friendly.
Resolves issue: #1162
Other changes:
- README: Cheatsheet: Document how to generate PNGs
- README: Improve "LaTeX" typography
- prelude-cheatsheet.pdf: Repl. file copy w/ symlink
Group customized keybindings to each package
Add modules to cheatsheet
Define free form text
Add more documentation to packages
Add projectile commands and descripts in text format
Add commands for modules
Add all keybinds of each module
Better line separation
Fix wrong location of avy and anzu keybindings
Include cheatsheet in readme
Add doc to generate pdf
Add cheatsheet in TOC
1. Introduces the `my-fav-irc` list for custom autojoining
your favorite channels
2. Introduces the `bye-erc-message` variable for customizing
the Last Quit Message
3. Adds documentation so that users can take advantage of these features
