BUG: Regression in the display of a MultiIndexed Series with display.max_rows (GH7101)
Merge pull request #7114 from jreback/mi_series_display

BUG: Regression in the display of a MultiIndexed Series with display.max_rows (GH7101)
API: allow option truncate for show_dimensions to only show the dimensions if the
     frame is truncated (GH6547)