plotROC 2.0.1
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Bug fixes:
  - Style and format of labels/lines fixed, now passed correctly to ggplot functions
  - Reduce run time of examples
  - Tested with dev version of ggplot2


plotROC 2.0.0
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Major changes to the API this release
  - calculate_roc and ggroc are deprecated
  - estimate and display roc curves using geom_roc
  - estimate and display confidence regions using geom_rocci
  - support for faceting and grouping
  - better performance and improved interactivity. 
  
plotROC 1.3.3
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  - Added support to ggroc method for objects as returned by ROCR::performance
  - Bug fix in labeling
  - Update d3
  - option to omit inclusion of d3 code

plotROC 1.3.2
--------------
Added support for new aesthetic options in plot_journal_roc and export_interactive_roc
  + colors
  + legends
  + line type
  + line width
  + axis labels
  + plotmath expressions in labels

Remove need to specify cutoff labels to plot and export. Those functions now read the data directly from the ggroc object. Easier to use this way!

plotROC 1.3.1
-----------
  * fix multi plot with n.cuts = 0 bug

plotROC 1.3
------------
  * Added tests
  * Fixed vignette
  * Allow arbitrary class labels
  * Cleanup after interactive plot creation
  * Citation information

plotROC 1.2
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  * New feature: click on interactive plot to display confidence region

plotROC 1.1
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  * New feature: Support for multiple curves

 plotROC 1.0
----------------
  * Initial release
