Bugfix: successfully remove ligatures from monospaced text
Typeset bibliography entries raggedright
Move multiple testing material to finite sample inference section
Rewrite introduction to regression material

* Add references to writing guides
* Move 'empirical strategy' material to the endogeneity chapter
* Move endogeneity chapter up earlier
Update README to account for new versioning method

The readme file still had information about generating VERSION.tex and CITATION.bib
from the git repo, and that's been removed.
Fix monospace spacing in code listings
Add 'final' target to makefile

This commit adds another target to the Makefile, 'final', that adds a
'final' option to the text before calling latexmk.
Merge branch 'master' into case-study