NOTE: You may find the tests and tools directories useful.
The data gathering stage is accomplished with Python while the the data visualization via React. The React app was initialized with create-react-app so it may have some tooling that is overkill for such a small project. To make changes to the source, just run the following NPM command from the GUI directory:
$ npm install
It will read the package.json file and install all dependencies in the same directory.
To start the development server (featuring hot reloading!), run:
$ npm start
To create a production build, run:
$ npm run build
It will compile, minimize, and bundle everything to the build directory.