Horizontal axis label should change when counts argument is provided to hist

[papajohn]

With counts=col, the horizontal axis contains values from col not from the column plotted (which contains counts), but currently the label is from the column plotted.

[papajohn]

Problem identified by @a-adhikari

If I use hist on the distribution table

value prop
101 0.25
102 0.5
103 0.25

the histogram looks fine but the horizontal axis is labeled prop, which is a bit disconcerting. Labeling it value would be better, no? But I'm guessing that if you're calling the old hist on a list created from prop, this might pose a problem. Please take a look when you get a chance. No rush (for a change).