Graphs: fix dimensions of McCracken plots
Monte Carlo: reduce number of simulations

5000 simulations => 60GB database file (which, along with intermediate
files, kills my desk space). Let's drop it down to 2000 simulations.
Styling: tweak spacing and font size

- changes the font to 12pt charter instead of 11pt
- changes the margins to 1.25in instead of 1in
- changes to single spacing instead of 1 and a half spacing.

Hopefully these all make the document easier to read; I'll probably
undo them before submission though.
Massive intertwined rewrite

This commit squashes together a ton of edits to the main paper.
It's horrible. sorry.
Bibliography: add and update references
Appendix: clean up source code and rewrite captions
Preamble: remove headers and clean up unused commands
Monte Carlo: small changes to writeup
Global: Spell-check paper
References: Add reference for TikZ and PGF
Theory, OOS convergence: Tweak spacing in equation
Empirics: clean up table listing Goyal and Welch variables

This commit adds the booktabs and tabularx packages to the
preamble and moves the list of Goyal Welch variables to
a booktabs table.
Empirics: improve table for reporting the in-sample results

This commit improves the table to report the in-sample empirical
results. It adds a hand-tuned table that combines the coefficient
estimates and the wald test results, but also provides an ugly
version of those results that is generated automatically by the
R code.
Empirics: rewrite and edits in progress
Empirics: editing in progress