KDE friendly warnings for constant data (#1744)
KDE friendly warnings for constant data (#1744)

* friendly warnings

* improve docstring

Co-authored-by: Martin Osvaldo <6b6291c0784ce83921ecc8ae4f097d3047438c8b@gmail.com>
arviz-devs/arviz,arviz-devs/arviz,arviz-devs/arviz,arviz-devs/arviz