ggplot: geom_area() in plotly
small changes in style
Merge pull request #89 from ropensci/pedro-geom-area-2

ggplot: geom_area() in plotly
Remove useless obsolete code block
Improve readability (style)
Revert obsolete workaround
Drop obsolete argument in function call accordingly
Implement conversion for geom_abline
Include test for abline
Merge pull request #90 from ropensci/marianne-geom-abline

Implement conversion for geom_abline
Fix merge conflicts (sync up with latest conversions)