loongson/pypi: links for prosemirror-python

loongson/mirror prosemirror-python-0.0.4.tar.gz
loongson/mirror prosemirror-python-0.0.3.tar.gz
loongson/mirror prosemirror-python-0.0.2.tar.gz
loongson/mirror prosemirror-python-0.0.1.tar.gz