Matches https://github.com/ilyagr/pijul-clone as of now, might become out of sync

Prevent `pijul apply` from creating empty channels

Created by  pmeunier  on March 1, 2021
4H6GNDAIGCSESF2DIBLGLRZUBDUYB6EUUSQ5TI6H5KDCGDKSXHTAC
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