mgcrea/angular-strap — pull request #1383 by vmlf01 (2014-12-27 19:55:15+00:00)
Title: feat(collapse): allow multiple open panels

Add support for having multiple open panels instead of default behaviour of toggling open panel. Activate the new behavior by specifying the allowMultiple option on the bsCollapse element.
By default it maintains previous behavior, so no breaking changes.

This feature was mentioned in #1375