vgdev/stable: links for shipstation

INFO: Because this project isn't in the mirror_whitelist, no releases from root/pypi are included.

vgdev/stable shipstation-0.1.6-py3-none-any.whl
vgdev/stable shipstation-0.1.5-py3-none-any.whl
vgdev/stable shipstation-0.1.4-py3-none-any.whl
vgdev/stable shipstation-0.1.3-py3-none-any.whl