py3-cssselect2: import from testing

py3-tinycss2: import from testing

py3-weasyprint: import from testing

py3-cairosvg: import from testing, update

py3-cairocffi: import from testing, update

py3-pyphen: import from testing, normalize

py3-pytest-isort: import from testing

py3-pytest-flake8: import from testing

py3-pyphen: import from testing

Fix section name in dispatch.sr.ht migration

paste.sr.ht: add py3-yaml dependency

Bump pkgrel on mercurial & hg-evolve

py3-srht, py3-scmsrht: update checksums

py3-pygithub: remove obsolete workaround

py3-deprecated: add pytest to checkdeps

Add py3-wrapt

Update py3-srht & py3-scmsrht

Update all dependency packages

Normalize py-* packages

Remove now-upstream packages, update to 3.10