Make DOMParseState.insert only return a node if the content could be placed
Make DOMParseState.insert only return a node if the content could be placed

mattberkowitz/prosemirror,mattberkowitz/prosemirror,kiejo/prosemirror,tzuhsiulin/prosemirror,adrianheine/prosemirror,tzuhsiulin/prosemirror,adrianheine/prosemirror,kiejo/prosemirror,salzhrani/prosemirror,kiejo/prosemirror,salzhrani/prosemirror,tzuhsiulin/prosemirror,adrianheine/prosemirror,jacwright/prosemirror,jacwright/prosemirror,salzhrani/prosemirror