loongson/pypi: links for flask-sockets

loongson/mirror Flask-Sockets-0.2.1.tar.gz
loongson/mirror Flask_Sockets-0.2.1-py2.py3-none-any.whl
loongson/mirror Flask-Sockets-0.2.0.tar.gz
loongson/mirror Flask-Sockets-0.1.tar.gz