Instead of a single url this patch allows to have a list of urls. So in case
of network instability a router can still reach local mesh-cloud server to pull
a update from. In this stage the autoupdater simply tries every mirror until
one passes all tests.
It is now possible to specific multiple branches like this:
config branch stable
option url ...
list pubkey ...
...
config branch testing
...
and select one in autoupdater.settings:
config autoupdater settings
option branch "stable"