Misleading warning for <10 unique float values

[kjyv]

Hey, thanks for this very nice package!
When plotting a feature with < 10 unique values, plotting with auto determines discrete mode.
However, it also outputs this warning which is not correct, the type in my case is float64.
Using categorical units to plot a list of strings that are all parsable as floats or dates. If these strings should be plotted as numbers, cast to the appropriate data type before plotting.