Don't crash when IME inserts an unexpected text node
Don't crash when IME inserts an unexpected text node

Issue #43

mattberkowitz/prosemirror,tzuhsiulin/prosemirror,bengler/prosemirror,tzuhsiulin/prosemirror,kiejo/prosemirror,tecnogram888/prosemirror,mattberkowitz/prosemirror,tzuhsiulin/prosemirror,salzhrani/prosemirror,tgecho/prosemirror,kiejo/prosemirror,adrianheine/prosemirror,salzhrani/prosemirror,adrianheine/prosemirror,salzhrani/prosemirror,ProseMirror/prosemirror-markdown,jacwright/prosemirror,bengler/prosemirror,kiejo/prosemirror,jacwright/prosemirror,adrianheine/prosemirror,tecnogram888/prosemirror,tgecho/prosemirror