Monarch

We need a small but compelling library of pipelines and steps that can be used
for QA analysis in MARINE. This test library should exercise the features of
monarch, including cross-plugin execution. Some examples:

1) Run proc univariate in SAS and display output
2) For all numeric vars in data, do pairwise scatterplot for outlier detection,
format on one page as matrix of plots
3) User-configurable scatter plot, histogram, bar chart (with grouping)

More are desirable. Will need to think about this some.