added scatterplot example.
Initial refactor to support a simple ``datacursor`` function
Minor API change: changed DataCursor._update to DataCursor.update
Renamed DataCursor.event_properties to DataCursor.event_info and added documentation to artist-specific functions
Minor reorganization for readibility
Minor documentation updates
Fixes to default formatter function
Cleanup of stray print
Bugfix for non-manually-labeled images
Removed redundant "template" and "offsets" kwargs and updated docs to reflect this.
Minor changes to formatter function (and corresponding changes to docs)
Bugfix for "datacursor" when no artists or axes are specified
Made datacursor interpolate for Line2D artists
Kwargs weren't being passed on to DataCursor. Easiest to just go back to **kwargs.
Fixed bug when multiple artists are selected with display="multiple".
Refactored HighlightingDataCursor to make the multi-highlight example work again.
Updated examples to work with the new "datacursor" API.
Minor documentation updates
Updated REAME to reflect new API changes.