loongson/pypi: links for bed-latex

loongson/mirror bed_latex-2.0.4.tar.gz
loongson/mirror bed_latex-2.0.3.tar.gz
loongson/mirror bed_latex-2.0.2.tar.gz
loongson/mirror bed_latex-2.0.1.tar.gz
loongson/mirror bed_latex-2.0.0.tar.gz