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

Fixing a panic in text_changes::get_deleted_names

Created by  pmeunier  on January 19, 2022
V5KA7K5NBMWPUXLXXUUOJRNNEN3Z6GNP435AUHRYVWJUYRSHBKLQC
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