Properly wire up pasting/dropping to fromDOMInContext
Properly wire up pasting/dropping to fromDOMInContext

Closes #357

salzhrani/prosemirror,tzuhsiulin/prosemirror,salzhrani/prosemirror,kiejo/prosemirror,tzuhsiulin/prosemirror,tzuhsiulin/prosemirror,kiejo/prosemirror,kiejo/prosemirror,salzhrani/prosemirror