Moving Penquins to SkyPortal GitHub organization

[Theodlz]

In an effort to keep the code maintained, up to date, and extensible, we would like to move it from your GitHub account @dmitryduev to SkyPortal, where Kowalski is as well.

[Theodlz]

Hi @dmitryduev, do you think we could do that quickly soon? We have some significant changes to get in and we'd like to do a new release, especially on PyPi, which is a blocker for some projects.