Put references back in ToC

The list of references should be easy to find, so it's back in the ToC.  I've
also decided not to support page numbers as part of the API, since they are
meaningless if I decide to make html files from these documents too.
Roll-back page numbering change

Since I've decided that the page numbers should not be part of the API, it
makes sense to just have one numbering scheme for each pdf and start the first
page at '1'.
Update to version 0.2.1

* Converts LaTeX characters to Unicode where possible.
* Reduces TOC depth
Merge branch 'master' into dev

Conflicts:
	asymptotics.tex
	finitesample.tex
	linearregression.tex
	probability.tex