Looks like Coturn is the definitive choice (it does both STUN and TURN). There's an apt package for Ubuntu as well.
The new Conversations with A/V calls was released today: https://play.google.com/store/apps/details?id=eu.siacs.conversations
Sounds great!
Yeah, I have to use pg_upgrade on my laptop for every major version. For Arch, it looks like this: https://wiki.archlinux.org/index.php/PostgreSQL#Upgrading_PostgreSQL
Just a hint: the linked doc is for an outdated version of Postgres. The replication options have changed since then:
Just got linked to exactly what we need, by @stevenroose@x0f.org:
https://blog.jabberhead.tk/2020/03/16/install-jitsi-meet-alongside-ejabberd/
Hint: Opening only one PR for two contributions means you will only be kredited for one. (I like how this incentivizes for single-topic PRs.)