Hello Ludovic,

Ludovic Courtès <ludo@gnu.org> writes:

>> Other than the few cosmetic remarks, the series looks great. I tested
>> producing multi-layers pack and images with success.
>>
>> You may want to wait for Ludo's opinion as a reviewer of the v4, but as
>> far as I am concerned, I think that you can directly proceed with the
>> cosmetic issues fixed.
>
> I haven’t been able to test it yet, but I agree with Mathieu’s
> suggestions and I agree that you can proceed with this small fixes.
>
> As a bonus, consider adding an entry in ‘etc/news.scm’: it’s definitely
> news-worthy!

All Mathieu's suggestions applied, etc/news.scm from v4 slightly
modified accordingly.  Everything pushed to master.

Thanks everyone for helping adding this feature.

Oleg.