Installation doesn't work due to Astrodatapy #5
Description
A collaborator made me notice that the installation of dragons doesn't work anymore with pip install 'git+https://github.com/smutch/dragons.git'
This is due to a problem of astrodatapy (see screenshot). I believe this is connected to the issue of astrodatapy that I highlighted a while ago in the Astrodatapy repository. I'd suggest either fixing that or removing astrodatapy when installing dragons.
@smutch @qyx268
