Merge revised tobyfigs into master

[tsbrett]

Updates to figures
a) changed y-axis for high-low and snapshots plots from AUC to |AUC - 05|
b) added additional simulation data and suplemental figures to heat-map plot

[e3bo]

I only found one problem: heat-plot35.tiff clearly looks different when I make it on my computer
compared to what is stored in git. I can email you my version if you'd like, a png is

It looks like at least the x-axis has changed from linear to logarithmic.

I guess there's one more thing. Cairo should be included in packrat.lock. Possibly, just make these changes:
+Package: Cairo
+Source: CRAN
+Version: 1.5-9
+

[tsbrett]

Thanks, the figure previously in the branch had an extended x range, to include data at lower reporting probability. The code generated the figure used in the paper (Fig 5), which only shows reporting_prob > 0.01.

I have changed the figure in the branch to the figure generated by the code.

[tsbrett]

I've added cairo to packrat. I'm not sure how to check it is working correctly.

[e3bo]

I've successfully used packrat::restore to install Cairo based on packrat.lock, so I think it is working.