Collapse plugin lacks option to disable animation

Created by: gtristan

Sometimes you just need to syncrhonously show or hide the content of a collapse.

Bootstrap currently does not provide any API to do this, I've been trying various combinations of adding and removing the 'in' class from the collapse element without success.

Further, it seems one cannot even work around the situation by calling $(element).collapse ('destroy') to just manually show/hide the thing and re-initialize the collapse.