Merge branch 'release/1.0.2' into develop
Added support for providing className to elements using Element.attr('class', 'your-class-name');

The changes were in both VML and SVG renderer where within setFillAndStroke check for class parameter and apply to element. For VML, it is applied as className property of node. The only extra computation comes in case where class is applied to group. The default class of the group is also retained.

The only change in core.js is to add class as part of availableAttrs
Fixed issue with paper.getById not returning elements within group.
Added specs to test paper.getById - unit and benchmark.
Reorganised the test specs.
Merge branch 'develop' into feature/group-events
Merge pull request #9 from fusioncharts/feature/attr-classname

Added support for updating DOM className of elements via Element.attr
Fixed error in VML renderer of element removal. Made the function as similar to SVG one as possible.
Sanitised the sanity tests and added spec for paper removal to it.
Merge pull request #10 from fusioncharts/feature/fix-paper-getbyid

Feature/fix paper getbyid
Add ID support to paper.
Modified gradient creation and management mechanism to re-use gradient elements for same gradient attributes.

The change is primarily associated around `addGradientFill` method of SVG renderer. The method now re-uses a previously created gradient element that has same attributes. Change was also made to `element.remove` function to ensure element definitions are removed in a managed fashion. For ease of management, a new function called `updateGradientRefernce` has been added.
Added test cases to unit test / functional test gradient element re-use management
Added performance test spec for gradient fill of element.
Updated minified/concat files.
Merge pull request #11 from fusioncharts/feature/single-def-per-gradient

Updated gradient element handling to create only single gradient element per unique fill
Version bump in package.json and recompilation for release/1.0.3
Merge branch 'release/1.0.3'