From 6c640133f146fbc7ff2f6b8837ebdfee3900ad06 Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Tue, 9 Apr 2013 19:09:05 -0600
Subject: [PATCH] Add 'native!' keymap override to let the browser handle the
 keystroke

This allows us to selectively opt out of handling key events with the
keymap for certain elements. In particular, it will be useful for
allowing the standard native behavior in input elements by overriding
global bindings for arrow keys, backspace, etc.