Adding methods to Alert for adding a Close/Closed handler.
Updating the Heading to render itself after setText and setSubtext. This ensures that there won't be any empty <small> tags if the user doesn't have a subtext. Also adding more documentation to Heading. (Issue #88)
Removing the setters for margin-top and margin-bottom from row since they are already on the parent.
Remove HasText
Merge pull request #93 from ArloL/patch-1

Remove HasText