What is the status of the PhotoSwipe plugins?

@dimsemenov I think in the past you said that the nucleus of PhotoSwipe light-box code would be small, the extensions should be implemented in plugins.

The only PhotoSwipe plugin I know, is the Dynamic caption plugin, which is even not mentioned on the PhotoSwipe github page.

I think there were plugins planned for at least a slide-show and for videos.

What is the status of these plugins? Is there already a beta version available? Are there other plugins planned? When can I expect a release of a new plugin?