Miniflux can be build with `go build -tags=sqlite` to test this. Note that
while it builds, it will fail at runtime, as some of the SQL used in miniflux is
postgresql-specific.
When upgrading my installation, I noticed that `miniflux -migrate` does
not provide any output by default. This can be a bit confusing since one
cannot be sure whether anything has happened. Use `Info` instead of
`Debug` to provide some basic output by default.
