Updating documentation

Author: brandonmburroughs

doc/source/whatsnew/v0.19.1.txt

@@ -48,3 +48,4 @@ Bug Fixes
 - Bug in ``MultiIndex.set_levels`` where illegal level values were still set after raising an error (:issue:`13754`)
 - Bug in ``DataFrame.to_json`` where ``lines=True`` and a value contained a ``}`` character (:issue:`14391`)
 - Bug in ``df.groupby`` causing an ``AttributeError`` when grouping a single index frame by a column and the index level (:issue`14327`)
+- Bug in ``Series.sort_index`` where parameters ``kind`` and ``na_position`` did not exist (:issue:`13589` & :issue:`14444`)

pandas/tests/series/test_sorting.py

@@ -145,6 +145,7 @@ def test_sort_index_multiindex(self):
         res = s.sort_index(level='A', sort_remaining=False)
         assert_series_equal(s, res)
 
+    # GH #14444 & #13589:  Add support for sort algo choosing
     def test_sort_index_kind(self):
         series = Series(index=[3, 2, 1, 4, 3])
         expected_series = Series(index=[1, 2, 3, 3, 4])