Clean up

[rouille]

Pull Request doc

Purpose

Format code, set python version in Pipfile, update Pipefile.lock and use requirements.txt for running tests. Closes #386.

What the code is doing

N/A

Testing

Existing unit tests

Where to look

• A new version of black requires some formatting in the test_emissions and plot_tornado modules
• There is a security issue related to cryptography 38.0.4. A new Pipefile.lock has been generated with bumped dependencies.
• For the same reason discussed here, the dependencies are installed using the requirements.txt file to run the tests.
• The python version is added to Pipfile

Usage Example/Visuals

N/A

Time estimate

5min

[rouille]

@jenhagg, do you have time to look at this?