loongson/pypi: links for txcan

loongson/mirror txcan-2020.10.2.tar.gz
loongson/mirror txcan-2020.10.2-py2.py3-none-any.whl
loongson/mirror txcan-2020.10.1.tar.gz
loongson/mirror txcan-2020.10.1-py2.py3-none-any.whl
loongson/mirror txcan-2020.10.tar.gz
loongson/mirror txcan-2020.10-py2.py3-none-any.whl
loongson/mirror txcan-2019.5.1.tar.gz
loongson/mirror txcan-2019.5.1-py2.py3-none-any.whl
loongson/mirror txcan-2019.5.tar.gz
loongson/mirror txcan-2019.5-py2.py3-none-any.whl