add destroy method to all plugins

[cvrebert]

[WAS: add destroy method to affix]
See e.g. http://stackoverflow.com/questions/23797241/resetting-changing-the-offset-of-bootstrap-affix

[fat]

yeah… might be worth adding teardown functions to all plugins

[fat]

i also updated that question with a much better answer… that person didn't really want a destroy method

[mdo]

Punting to the v4 checklist.

[jdanyow]

I'm using the affix plugin in a single page application. When I remove the affixed content from the dom I call $(window).off('.affix') to avoid a memory leak.

A documented "destroy" method would help users of the affix plugin to avoid memory leaks. In the docs it might be helpful to call out the memory leak pitfall- "if you're using the affix plugin in a single page application be sure to destroy it when you remove the affixed content" or something.

Any chance this issue can be re-opened?

My stackoverflow post:

http://stackoverflow.com/questions/21713468/bootstrap-affix-plugin-memory-leak/

[infacq]

1+

[cvrebert]

X-Ref: #6315, #7166