Rename file for main paper
Merge branch 'master' into bootstrap

This commit changes the representation of footnotes in the LaTeX
source code; they play better with git and emacs now.
Remove mixed-window material

This commit removes a bunch of material to focus on just the
out-of-sample bootstrap. In particular, it removes
- theory for mixed-window statistic
- material on multiple testing
- monte carlo simulations for that statistic
- empirical exercise

Obviously, a lot needs to be added for this to be a standalone
paper.