Keter 2.1.0 released

Hello everyone!

A new release for keter is here. This provides a overhaul of the logging system, no longer uses keter it’s own homegrown system, but it uses monad logger on top of fast-logger instead.
This allows us to leverage fastlogger’s log rotation, as well as providing stderr logging which integrates well with systemd for example.

Note that this is a breaking release for the log file format,
see the migration guide for help.

Special thanks to @RiugaBachi for doing most of the work,
and Supercede for funding this effort.