gg_covariate_balance    Create a ggplot2 Covariate Balance Plot
gg_placebo_test         Create a ggplot2 Coefficient Plot from Placebo
                        Test Results
ggplot_panel_estimate   Create a ggplot2 Coefficient Plot from
                        PanelEstimate Results
pretty_covariate_balance
                        Tidy Covariate Balance Matrices into a Data
                        Frame
pretty_placebo_test     Tidy placebo_test Results into a Data Frame
tidy_panel_estimate     Tidy PanelEstimate Summaries into a Data Frame
