Highlight negative and positive coverage changes in merge requests
### Description In merge requests you can currently see the new coverage in percent after a coverage pipeline job succeeded. It would be more helpful if you can see the coverage change: If it got improved or if it changed for the worse. ### Proposal There should be something like a red or green badge and a text like - "Coverage improved from 13.37% to 42.00%" - "Coverage changed from 42.00% to 13.37%" ### Links / references #### Old: ![Spectacle.L30519](/uploads/0b845f06643f3ccd1d591bcaf78517fd/Spectacle.L30519.png) #### New: ![coverage_change](/uploads/43024b7c122529b44c06db1bb612f7c6/coverage_change.png)
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