aesthetic changes, scales for line widths in legends, linetype2dasharray functions collapsed into one.
Updated popPlots3 to remove manually specified legend.
Updates to geoms to make legends prettier.
Updates to lineplots to make legends prettier
Updates to scatterplots to make legends prettier.
Left-align legend header, center points within the rest of the legend element, update documentation, fix types, and fix merge of data frames that ggplot says ought to be merged.
Fix examples to have nice legends.