Accessibility fixes for jaws screen reader.

Works with everything but jaws at this point.

Address issues with pie legend layout. Fixes #2531849

Cleaned up some dom orphans that surfaced from aria.

Accessibility tweeks for chart. Fixed axis label regression.

Added aria live-region to charts.

Add touch interaction to charts. Fixes #2530195

First pass at adding more mobile friendly charts interactions. Also, tooltip fix for recently surfaced bug when axis label function return dom elements instead of strings.

Initial chart legend commit

Fixed PieChart datatip function to work like the cartesian chart method. Removed operations from axis.getLabel to allow it to be used for more purposes. Some axis refactoring.

Added unique _setText method for axis and chartbase.

Replaced innerHTML with appendChild for axis label, title and chart datatip. Added overridable methods for adding content to the dom.

Added Shape groups to graphics. Added notion of groupMarkers to charts to allow for high performance rendering a large number of markers in a single chart. More axis performance optimizations. Added drawCircle, drawEllipse and drawDiamond to VML and SVG drawing engines. Optimized shape getBounds method to use newly created matrix.getContentRect method.

Add charts validation and documentation.

Fixes #2529859

Fixed issue in which stacked column charts threw errors when a series contains no data. Fixed issue in which planar events through error when first series in a chart had no data. Fixes #2531040

Added pageX, pageY ande originEvent to chart markerEvent and planarEvent. Prepend chart series marker dom id with chart widget id instead of the string series. Fixes #2530127 and #2530969.

Allow for passing in direct class references in seriesCollection. Fixes #2530591

Fixed doc issue in graphics module. Removed hard-coded instances of yui3- class prefixes in Charts. Fixed issue in which Chart's NumericAxis was not honoring explicitly set minimum and maximum attributes. Fixes #2530810 and #2530908.

API Doc fixes for charts and graphics.

Fixed Charts API doc errors.

Add axis title. General code cleanup. Fixes #2529841

fixed tooltip visibility issue. Fixed vml issue in which colors were being overwritten.

Removed typo that caused errors when updating the tooltip attribute. Fixed issue in which the tooltip's node could not be overwritten. Fixes #2530115

Ensuring "show" property is copied along w/ the rest of the properties for the tooltip, fixes issue where setting show : false in tooltip config is ignored.

Added a canvas based drawing api for fallback when svg is not available. Fixes #2529659

API doc updates.

Added events to the docs.

Comments, just comments.

Fixed issue in which planar and marker label functions were not updating properly.

Fixed bug in which planar events were not always firing in the example template. Fixed bug in which planar label function was not properly exposed.

Fix #2529564. Added IE9/Opera label rotation. Updated default styles. Fixed some minor style issues.

Fix #2529011. Documentation. Prevent null errors on marker state updates.

Charts commit.