Metaflow 2.7.20

What's Changed

• Bug/long card by @obgibson in #1233
• Restrict token permissions for test jobs by @romain-intel in #1238
• Since we're now providing type annotations, add typed marker as per PEP-561 by @oavdeev in #1239
• Allow configuration of plugins/cmds using METAFLOW_ENABLED_* variable by @romain-intel in #1212
• Bump setup.py to 2.7.20 by @romain-intel in #1244

Incompatible change

If you are using the unsupported Metaflow Extensions mechanism, you may have to change them slightly. Please see https://github.com/Netflix/metaflow-extensions-template/blob/master/CHANGES.md for more details.

Full Changelog: 2.7.19...2.7.20