Update simplejson from 3.14.0 to 3.15.0 (#582)
Update simplejson from 3.14.0 to 3.15.0 (#582)


mozbhearsum/balrog,mozbhearsum/balrog,mozbhearsum/balrog,testbhearsum/balrog,testbhearsum/balrog,testbhearsum/balrog,testbhearsum/balrog,mozbhearsum/balrog