Barplots misaligned

[popher]

I found the vertical and horizontal bar plots (intersection and base set size), the bars were not aligned with the scatter matrix or even their own labels.

It is fixed by changing _inters_sizes_plot (line 372) to remove the - width / 2 part. I don't know why this is there, it only offsets the bars the wrong way?

Likewise in _base_sets_plot (line 293) remove the - height / 2 part.

I will try to make the push but in case I dont/or if this repo is no longer being maintained, this is useful for reference.