The >300 open issues and what seems like tons of ignored pull-requests also don't fill me with confidence. To bad, the demo on mobile looked really great.
The license is MIT, you don't need to add anything else.
> The >300 open issues and what seems like tons of ignored pull-requests
Old version of PhotoSwipe was not developed me and I did not manage repository. Previous owners just passed development to me a few months ago https://twitter.com/PhotoSwipe/status/444134042787930113 and I started working on a new version.
I can assure you that all new issues and pull-requests will be managed appropriately.
Mh, I saw the notice that it changed hands but somehow it didn't click that the issues were older... sorry about that then, and great to hear that it now has an active maintainer! Good luck with it!