loongson/pypi: links for agsci-blognewsletter

loongson/mirror agsci.blognewsletter-0.4.tar.gz
loongson/mirror agsci.blognewsletter-0.3.tar.gz
loongson/mirror agsci.blognewsletter-0.2.tar.gz
loongson/mirror agsci.blognewsletter-0.1.tar.gz