* use biom_open
* filterSamples -> filter
legend_loc and y_label
* dpi/figsize/format
* simplification of get_chart
* some code cleanup
legend location, and support for unique without restriction
n= was not reflecting the filtered biom table
support for ylim
support for grid lines
added support for rotation
allow turning off yticks
removed alpha on legend, pdf format support for legend
added fontsize support
better way to unset ylabels...
removing print statements
extension wasn't handled right
fontsizes and families
better handling of fonts and sizes
newline before sample size
bug: collapse was normalizing inflating counts
typo on key
support for subplots