update isort config

Author: jorisvandenbossche

setup.cfg

@@ -116,9 +116,12 @@ sections=FUTURE,STDLIB,THIRDPARTY,PRE_LIBS,PRE_CORE,DTYPES,FIRSTPARTY,POST_CORE,
 
 known_first_party=pandas
 known_third_party=Cython,numpy,dateutil,matplotlib,python-dateutil,pytz,pyarrow,pytest
-multi_line_output=4
+
+multi_line_output=3
+include_trailing_comma=True
 force_grid_wrap=0
 combine_as_imports=True
+line_length=88
 force_sort_within_sections=True
 skip_glob=env,
 skip=