rails/rails — pull request #7847 by bloudermilk (2012-10-04 18:54:05+00:00)
Title: ActionController::Parameters#permit! is recursive

This is a port of rails/strong_parameters#41 for rails/master, as per @dhh's request in the same PR. This is my first contribution to Rails so feel free to let me know if I botched the `Changelog` or something.