Maintaining and releasing the skulls project is something I like to do
but also something that is not exactly becoming more easy when
time is scarse and there is no compensation at all :)

- don't output path to systemctl to stout

Fixes #142

Closes #133

This is what could go to blobs/x230/ in Heads.

see #125

to the current state in coreboot/util

this should be stuff used by any supported type of hardware and helps #93
or #102

thanks for the link in #103

see #100

change to working dir for the scripts that use util/.

put some emphasis on choosing an image and support flashing any 4M image
externally.

This may help in refurbishing an x230 laptop.

the update function already uses it

upgrade.sh is gone