loongson/pypi: links for skytravel

loongson/mirror SkyTravel-0.6.6.zip
loongson/mirror SkyTravel-0.6.5.zip
loongson/mirror SkyTravel-0.6.3.zip
loongson/mirror SkyTravel-0.6.2.zip
loongson/mirror SkyTravel-0.6.1.zip
loongson/mirror SkyTravel-0.6.0.zip