loongson/pypi: links for seqmetrics

loongson/mirror SeqMetrics-2.0.0.tar.gz
loongson/mirror SeqMetrics-1.3.4.tar.gz
loongson/mirror SeqMetrics-1.3.4-py3-none-any.whl
loongson/mirror SeqMetrics-1.3.3.tar.gz
loongson/mirror SeqMetrics-1.3.2.tar.gz
loongson/mirror SeqMetrics-1.3.1.tar.gz