Add whatsnew entry for bug fix

David Hirschfeld · David Hirschfeld · commit 9ad40d5face9 · 2020-01-30T23:47:21.000+10:00
diff --git a/doc/source/whatsnew/v1.0.1.rst b/doc/source/whatsnew/v1.0.1.rst
@@ -16,6 +16,8 @@ including other versions of pandas.
 Bug fixes
 ~~~~~~~~~
 
+- Bug in :meth:`AbstractHolidayCalendar.holidays` when no rules were defined (:issue:`31415`)
+
 
 Categorical
 ^^^^^^^^^^^
