add Figure 9.3: Features: genes seen in the whole data set. The x-axis displays the number of uniquely aligned fragments and the y-axis shows how many features are seen within each x subset of fragments.
add PCA (1−2) of top 500 most diverse genes
add toc (floating if we can adjust content width) or via markdown if not [done]
detail out column model of main results table(s)
render ensbml link in interactive table (make sure to also include non-ensembl data)
prep example data for testing
use symbols for "Extract most signifiantly changed genes and display" heatmap (if present)