e.g. ``` python-version: ['2.7'] plone-version: - '4.1' - '4.3' - '5.0' - '5.1' - '5.2' include: - plone-version: 5.2 python-version: 3.7 - plone-version: 5.2 python-version: 3.8 ``` ends up looking like <img width="449" alt="Screen Shot 2021-02-02 at 4 40 13 pm" src="https://user-images.githubusercontent.com/41700/106581415-6a10d880-6575-11eb-98cc-b96cadde8091.png">