loongson/pypi: links for sigmoidal

loongson/mirror Sigmoidal-0.4.0.tar.gz
loongson/mirror Sigmoidal-0.4.0-py3-none-any.whl
loongson/mirror Sigmoidal-0.3.0.tar.gz
loongson/mirror Sigmoidal-0.3.0-py3-none-any.whl
loongson/mirror Sigmoidal-0.2.1.tar.gz
loongson/mirror Sigmoidal-0.2.1-py3-none-any.whl
loongson/mirror Sigmoidal-0.2.0.tar.gz
loongson/mirror Sigmoidal-0.2.0-py3-none-any.whl
loongson/mirror sigmoidal-0.1.0.tar.gz
loongson/mirror sigmoidal-0.1.0-py3-none-any.whl