BUG: Series.__iter__ not dealing with category type well (GH7839)
Merge pull request #7842 from jreback/cat_iter

BUG: Series.__iter__ not dealing with category type well (GH7839)
BUG: PeriodIndex.unique results in Int64Index
DOC: add link to SettingWithCopy warning/error message (GH7658)
COMPAT: SettingWithCopy will now warn when slices which can generate views
        are then set
Merge pull request #7845 from jreback/setting_with_copy

COMPAT: SettingWithCopy will now warn when slices which can generate views are then set
Merge pull request #7843 from sinhrks/punique

BUG: PeriodIndex.unique results in Int64Index
BUG/VIS: rot and fontsize are not applied to minor ticks