Co-authored-by: sedram <54665381+sedram@users.noreply.github.com>
The mathematical constant *τ* = 6.283185..., to available precision.
Tau is a circle constant equal to 2\ *π*, the ratio of a circle's circumference to
its radius. To learn more about Tau, check out Vi Hart's video `Pi is (still)
- Wrong <https://www.youtube.com/watch?v=jG7vhMMXagQ>`_, and start celebrating
+ Wrong <https://vimeo.com/147792667>`_, and start celebrating
`Tau day <https://tauday.com/>`_ by eating twice as much pie!
.. versionadded:: 3.6