Synoptic: n. a concise overview capturing key elements

[rdmontgomery]

Let HiPPO digest a url when prompted with the magic command, e.g.

plugin:digest https://synaptiq.ai

• Moved pytest fixtures to conftest.py
• Marked test_digest with internet because it requires internet access
  • Access test with pytest tests/test_digest.py -m internet
• isort and black all the things