Dcoraid

- setup: fix build pipeline (remove editable install)

- feat: support new DCOR API for uploading data directly to S3
- feat: perform faster ETag verification instead of SHA256 summing
- enh: add api.errors.APIBadRequest error class
- enh: speed-up resource download by computing SHA256 while downloading
- enh: improve logging
- setup: bump dclab from 0.57.0 to 0.58.5
- setup: migrate from setup.py to pyproject.toml

- setup: bump dclab from 0.55.7 to 0.57.0

- setup: bump dclab from 0.52.0 to 0.55.7

- fix: handle not-found-errors for non-existent resource downloads
- ref: replace setuptools pkg_resources with importlib.resources

- setup: drop support for Python 3.9
- ci: migrate from appveyor to GitHub Actions