Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Small typesetting changes for chapter 7.
Typesetting and minor edits to chapter 8.
Merge remote-tracking branch 'upstream/master'
Updated generated PDF.

Generated with an ever so slightly newer pdftex, larger file, but the
fonts look better on my Debian system (not embedded previously?).
Merge pull request #11 from nuked/master

Small updates to chapters 7 and 8.