Kubuntu 18.04.2 LTS -> Ubuntu 19.04

[Volker Wysk]

Hi!

I'm about to say KDE goodbye, and switch to Gnome3. 

Which is upgraded every half-year as part of Ubuntu. I don't think
there exist PPA's for Gnome, in the same way as for KDE, that give you
the newest Gnome. So I have to drop LTS and "swim with the crowd",
getting a new Gnome version every half-year, as part of Ubuntu.

This means that I have to migrate from my 18.04.2 LTS system to the
newest Ubuntu version.

Can this be done with do-release-upgrade or something like that? I
really don't want to set up everything from scratch _again_. There's a
lot to setup.

Cheers,
Volker