Numeric fix for histograms with small binning

[ManuelHu]

Sorry for the noise, but here is another fix for my recently merged histogram implementation #98

It is most important for a variable binning with steps <~ 10e-8, which might have incorrectly been converted to a range object.
The fix is just to disable any automatic conversion from an edge array to a range object. The old functionality is still exposed as a separate function.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.30%. Comparing base (ad9684b) to head (60ff9bf).
Report is 91 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #102      +/-   ##
==========================================
+ Coverage   76.26%   76.30%   +0.03%     
==========================================
  Files          46       46              
  Lines        3029     3038       +9     
==========================================
+ Hits         2310     2318       +8     
- Misses        719      720       +1     

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