message: [title] Fix issue with non-string names in series title
diff: @@ -1527,11 +1527,9 @@ class DistributionBarViz(DistributionPieViz):
  continue
  if isinstance(name, string_types):
  series_title = name
  - elif len(metrics) > 1:
  - series_title = ', '.join(name)
  else:
  - l = [text_type(s) for s in name[1:]] # noqa: E741
  - series_title = ', '.join(l)
  + offset = 0 if len(metrics) > 1 else 1
  + series_title = ', '.join([text_type(s) for s in name[offset:]])
  values = []
  for i, v in ys.items():
  x = i
  