Archive old migrations (#426)

* Archive old migrations

* Fix invalid placement of migrations

migrations/archive/000.072.sql

@@ -0,0 +1,10 @@
+ALTER TABLE samples
+    ADD COLUMN quantity INTEGER,
+    ADD COLUMN date_processed timestamp with time zone,
+    ADD COLUMN status VARCHAR;
+
+UPDATE samples SET quantity = 1, status = 'processed', date_processed = NOW();
+
+ALTER TABLE samples
+    ALTER COLUMN quantity SET NOT NULL,
+    ALTER COLUMN status SET NOT NULL;