put subclass first for class attributes of subclasses of element
theme docs: added more explanation of plot.margin
Merge pull request #687 from jrnold/fix/doc-themes-plot-margin

theme docs: added more explanation of plot.margin
Merge pull request #686 from jrnold/fix/elements-class

put subclass first for class attributes of subclasses of element
Add error for non-cartesian coords and free scales
Merge branch 'coord-warning'
Update NEWS
Re-roxygenize
Hack to make ggplot2 work with old and new versions of plyr
Change from aaply to apply, for new version of plyr
Update NEWS
stat_identity: allow setting width and height
Add visual tests for setting width and height
Merge branch 'set-width'
Add wrapper function for plyr::rename so it works with old and new version

Also change the Imports version of plyr so that it works with old and new
version.
Better ranges for coord_map gridlines. Fixes #689
Add visual tests for map projections
Merge pull request #698 from wch/fix-map-lines

Fix map lines
Draw polygons together as a single grob

Previously, each polygon (specified by group) was drawn as a separate grob.
Now all the polygons in a panel are drawn with a single grob, which is much,
much faster.
Cleanup of GeomPolygon$draw() code