postgres automatic schema management roughly working

capsulflask/schema_migrations/01_up_create_SchemaVersion.sql

@@ -0,0 +1,5 @@
+CREATE TABLE schemaversion (
+   version INT PRIMARY KEY NOT NULL
+);
+
+INSERT INTO schemaversion(version) VALUES (1);

capsulflask/schema_migrations/02_up_test.sql

@@ -0,0 +1 @@
+UPDATE schemaversion SET version = 2;