Developing a new visualization

This manual is intended for developers that want to contribute to Proteic adding new visualizations.

1. Declare the new module in index.ts
2. Create a new file in src/charts/, named after your new visualization. This file will hold the TypeScript class that represents the visualization.
3. Create the default configuration for the visualization, in src/utils/defaults/, named after the visualization.
4. Create the strategy class to draw the visualization, in src/svg/strategies/.
5. Add the necessary components to src/svg/components/. You can re-use the existing ones, if possible.
6. Add one example using your new visualization to examples/.
7. Add tests and documentation.