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Handful of small improvements

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@arilamstein arilamstein released this 11 May 17:13
· 218 commits to master since this release

Version 1.5.0 has a handful of minor changes:
-NA values now appear black. The previous value of grey50 (the default NA color in ggplot2) was difficult to distinguish from light values in the brewer scale, which is the default scale in choroplethr.
-Create function clip_df(data.frame, lod) that clips a data.frame to a map. This is useful
when you want to do statistics on a data.frame (such as above/below median values), and have your computations match the map. For example, maps in choroplethr do not contain Alaska or Hawaii.
-Rename vignettes so that they appear in proper order on CRAN website.
-Export format_levels function.

BUG FIXES
-handle counties with leading zeroes.