bmuschko/grails-google-visualization — pull request #7 by ionis (2012-09-28 09:15:39+00:00)
Title: Added bar attribute to ComboCoreChart

The bar attribute was missing from the ComboCoreChart so I went ahead
and added it. Accepts an object with the key groupWidth which has a
value defined in the documentation as -

The width of a group of bars, specified in either of these formats:
* Pixels (e.g. 50).
* Percentage of the available width for each group (e.g. '20%'),
where '100%' means that groups have no space between them.