sr.ht/py3-gitlab: upgrade to 1.15.0
sr.ht/py3-furl: upgrade to 2.1.0
sr.ht/py3-emailthreads: bump pkgrel
sr.ht/py3-editor: bump pkgrel
sr.ht/py3-deprecated: upgrade to 1.2.7
sr.ht/py3-cssselect2: upgrade to 0.2.2
sr.ht/py3-colour: bump pkgrel
sr.ht/py3-cairosvg: upgrade to 2.4.2
sr.ht/py3-cairocffi: upgrade to 1.1.0
py3-bleach: remove upstreamed package
sr.ht/py3-atpublic: bump pkgrel
sr.ht/py3-asyncpg: update to 0.20.0
sr.ht/py3-arrow: update to 0.15.4
sr.ht/py3-anyjson: bump pkgrel
sr.ht/py3-ansi2html: bump pkgrel
sr.ht/py3-alembic: upgrade to 1.3.2
sr.ht/py3-aiosmtpd: bump pkgrel
build.yml: use alpine 3.11
sr.ht/py3-importlib-metadata: add addl. dependencies