Add check for Date to #basic_attribute_type?

This should fix #1243.

Author: andsip

lib/active_record/connection_adapters/sqlserver/database_statements.rb

@@ -359,6 +359,7 @@ def basic_attribute_type?(type)
             type.is_a?(String) ||
             type.is_a?(Numeric) ||
             type.is_a?(Time) ||
+            type.is_a?(Date) ||
             type.is_a?(TrueClass) ||
             type.is_a?(FalseClass) ||
             type.is_a?(NilClass)