Changelog
91c01a2 Bump github.com/go-acme/lego/v4 from 4.4.0 to 4.5.3 (#26)
f6a443a adds fritzbox session check and re-authenticate if nesessarry
6ff46fa makes --version more useful for dev
887338f makes fritzbox and utils internal packages
6842df6 replaces ioutils usage with io
