Where can I find a list or documentation of the XEP's that Siskin.im supports?

Does Siskin support E2EE for voice/video calls? Or is the "XEP-0320: Use of DTLS-SRTP in Jingle Sessions" needed? Or is this XEP being implemented? "Verify encrypted A/V calls with OMEMO" https://gist.github.com/iNPUTmice/aa4fc0aeea6ce5fb0e0fe04baca842cd Does Siskin support ZRTP or SRTP?

I also do not see much clear documentation of which XEP's are implemented on servers that relate to a/v calls. A resource on this would be amazing.