Change setup.cfg -> pyproject.toml

Solve matplotlib warning: Setting data with a non sequence type is de…

…precated since 3.7; other formatting improves

Create InteractiveObject._on_right_pick() to make it possible to chan…

…ge right click behavior more easily in subclasses

Remove unnecessary printing and add verbose option to reactivate it i…

…f needed

Remove debug prints, update documentation

Add horizontal/vertical options in Cursor() and ginput() + appearance…

… options in ginput()

Update Manifest.in

Add arguments of Rect() to rinput(), update documentation

Change picking management for Rect() to allow for independent edge/co…

…rner detection

Update documentation including demo video; code formatting, add 'c=' …

…option as color shortcut