snap
----
sudo snap install --classic --dangerous ./demolibvpn_0.20.4-85-g699d2b8_amd64.snap
snap run demolibvpn.launcher

amd64-static
------------
You will need to install the helpers manually from console the first time, for
now (it will ask for sudo). This will be done by a Graphical Installer.

chmod +x demolibvpn-static
./demolibvpn-static --install-helpers
./demolibvpn