Let's find a good name for the project!

sft for Spline Fitting Toolbox is the current name of the project but it is already taken on Pypi.

scikit-spline could be used here.

@uhlmann suggested splinebox, which is probably a better name for imports.

If we rename (and distribute) the project, we need to:

• remove old references to sft
• use splinebox for everything
• change the project url to include splinebox
• tell people to change their remote to point to this new one