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

Remove upstreamed aports

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

sr.ht/py3-contextlib2: new aport