pre-commit hooks for notebooks:

• Strip outputs
• Ignore execution_count
• Blacken & Isort code cells

Add the prenotebook pre

    %%file .pre-commit-config.yaml
    repos:
    - repo: https://github.com/ambv/black
      rev: 19.10b0
      hooks:
      - id: black
    - repo: https://github.com/deathbeds/prenotebook
      rev: e8b3b91d9dc195a67f42177a9f3298f9749ea43a
      hooks:
      - id: prenotebook

    !jupyter nbconvert --to markdown --TemplateExporter.exclude_output=True readme.ipynb