There's no need to restart Emacs for a trivial config change; you just M-x eval-buffer RET and go on about your business, and I've opened a pull request with a

There's no need to restart Emacs for a trivial config change; you just M-x eval-buffer RET and go on about your business, and I've opened a pull request with a patch which updates the document to reflect that fact. (You do still want to restart after something like a major package update, because not every module author is good about making sure that his code can be initialized more than once per session, and the patch reflects that fact as well.)