Update metadata on change rather than on keyup
Update metadata on change rather than on keyup

jupyter/nbgrader,jdfreder/nbgrader,jhamrick/nbgrader,EdwardJKim/nbgrader,ellisonbg/nbgrader,dementrock/nbgrader,jupyter/nbgrader,ellisonbg/nbgrader,jupyter/nbgrader,modulexcite/nbgrader,dementrock/nbgrader,jhamrick/nbgrader,MatKallada/nbgrader,ellisonbg/nbgrader,jdfreder/nbgrader,alope107/nbgrader,jhamrick/nbgrader,jhamrick/nbgrader,jupyter/nbgrader,EdwardJKim/nbgrader,ellisonbg/nbgrader,modulexcite/nbgrader,EdwardJKim/nbgrader,EdwardJKim/nbgrader,jupyter/nbgrader,alope107/nbgrader,MatKallada/nbgrader