Get subscribers (count)

[dacx]

Hi there,

would you care about adding some analytical information to the package? For example, the current subscribers and the overall subscriber count? It's available at /api/v1/publication_launch_checklist. I'd be happy to open a PR if that's cool with you.

Cheers!

[dacx]

Created a PR regardless, because I need that feature. #21

[ma2za]

nice... thanks