added schema version patch

sql/patch_55_56_a.sql

+# patch_54_55_a.sql
+#
+# title: update schema version
+#
+# description:
+# Update schema_version in meta table to 56
+
+UPDATE meta SET meta_value='56' WHERE meta_key='schema_version';
+
+# patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value) VALUES (NULL, 'patch', 'patch_55_56_a.sql|schema_version');
+
+