Remove assumption that parent context can be used as initializer for contained DOM elements
Remove assumption that parent context can be used as initializer for contained DOM elements

CantemoInternal/pyxb,jonfoster/pyxb-upstream-mirror,jonfoster/pyxb1,jonfoster/pyxb1,balanced/PyXB,jonfoster/pyxb-upstream-mirror,balanced/PyXB,CantemoInternal/pyxb,jonfoster/pyxb-upstream-mirror,CantemoInternal/pyxb,balanced/PyXB,pabigot/pyxb,pabigot/pyxb,jonfoster/pyxb2,jonfoster/pyxb2,jonfoster/pyxb2