* @cfg {Boolean} outline default false (except for weight=default which emulates old behaveiour with an outline)
* @cfg {String} size (lg|sm|xs)
* @cfg {String} tag (a|input|submit)
* @cfg {Boolean} outline default false (except for weight=default which emulates old behaveiour with an outline)
* @cfg {String} size (lg|sm|xs)
* @cfg {String} tag (a|input|submit)