The Little Book of Semaphores, Second Edition (2008)
Make it work with pdflatex, stylistic fwd-ports and changes

* use KOMA (european-style) book class, onesided
* forward-port listings, use xcolor instead of color
* color changes (link colors)
* use TeX Gyre Schola font, with the microtype package
* disable \sloppy in favor of \tt hyphenation and code comments alignment
* remove double-page clears, remove some whitespace
* fix minor typos