GitLab

It is source of most warning noise in Warning channel and we would like
to enable warning channel some time in future by default

added NAT traversal option and constructor test

Added example "chat" with README

fix CI and gx

For some reason, this was causing gx to freak out.

Mulit-protocol app with protobufs

(otherwise, the gx imports won't work)

We already have this one imported into GX. Saves the effort of importing a
different one.

(need to use the canonical repository location for everything to work)