Enable multivalue insert for presto dialect (#330)

supports_multivalues_insert = True

Author: bkyryliuk

pyhive/sqlalchemy_presto.py

@@ -77,6 +77,7 @@ class PrestoDialect(default.DefaultDialect):
     supports_pk_autoincrement = False
     supports_default_values = False
     supports_empty_insert = False
+    supports_multivalues_insert = True
     supports_unicode_statements = True
     supports_unicode_binds = True
     returns_unicode_strings = True