DOC: new EAs (#30760)

TomAugspurger · jreback · commit e0f8340630b9 · 2020-01-06T18:37:08.000-05:00
diff --git a/pandas/core/base.py b/pandas/core/base.py
@@ -716,6 +716,8 @@ def array(self) -> ExtensionArray:
         period             PeriodArray
         interval           IntervalArray
         IntegerNA          IntegerArray
+        string             StringArray
+        boolean            BooleanArray
         datetime64[ns, tz] DatetimeArray
         ================== =============================
 
