add unicode printing support
to disable it
clear the content of /usr/local/etc/devterm-printer
and restart devterm-printer.service by
```
sudo systemctl restart devterm-printer
```
add old devterm-printer into old component for backup by using
```
reprepro -C old -A armhf -S utils includedeb stable devterm-thermal-printer_0.29_armhf.deb
```