…ragraphs (pythonGH-108065)
* Only show GitHub check annotations on changed doc paragraphs
* Improve check-warnings script arg parsing following Hugo's suggestions
* Factor filtering warnings by modified diffs into helper function
* Build docs on unmerged branch so warning lines match & avoid deep clone
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(cherry picked from commit eb953d6)
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>