loongson/pypi: links for jupyter-emacskeys

loongson/mirror jupyter-emacskeys-0.2.3.tar.gz
loongson/mirror jupyter-emacskeys-0.2.2.tar.gz
loongson/mirror jupyter-emacskeys-0.2.1.tar.gz
loongson/mirror jupyter-emacskeys-0.2.tar.gz