Histgrom density estimation (density kwarg) with out of range values
unfortunately it was noticed in Issue 13604  that when histogram is given used with a specified range and the `density=True` keyword argument out of bound values are simply discarded .
Discarding out of bound values makes sense when the density/normed option is not used, since in that case event counts are reported. However, when out of bound values exist, the probability density should arguably not sum up to 1 anymore.
We seem to have three ways possible to continue here:
1. Call it an outright bug and fix it. 2. Add a FutureWarning, and change it later (unfortunately noisy) 3. Add a new kwarg to control what happens and a FutureWarning which can be silenced using the new kwarg.
(No change will ever happen if `range` or manual bin edges were not specified.)
If all agree that there is no reasonable use case for the current implementation, it would be tempting to simply change it, or use a FutureWarning (unfortunately forcing users to manually calculate the density). If there is any half-decent use case, the kwarg may be the nicer option.
Personally, if no one finds has a use case, I am slightly tending towards the "bug fix" option right now.
All the Best,
 https://github.com/numpy/numpy/issues/13604  As mentioned in the documentation.