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

Propagating the new zero-copy VertexBuffer::output_line to credit.rs

Created by  pmeunier  on January 13, 2022
3Q24BC5L3CWCO3EY7RIHRDZARTJAP5LP4S2D3TJWCYB2762GHGAAC
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