twitter/bootstrap — pull request #6670 by krmckelv (2013-01-22 21:22:49+00:00)
Title: Incompatibility with GoogleCharts BarFormat

With image height auto, we see some images being unnecessarily warped. You can see this problem if you set up a GoogleChart's BarFormat (https://developers.google.com/chart/interactive/docs/reference#barformatter)

Forced children images not be re-scaled past their parents imposes an unnecessary restriction on the developer.