A few issue with the components docstring.

• When working in vscode, the components docstring doesn't get applied because there is a filename with the same name as the component name. Solution: use snake_case for the component classes filename.
• The arguments docstring is not in the right place, it should be under init.
• Add type hinting with the typing module (can be used in python 2 docstrings).
• docstring max width should be max 70 chars.