Squash tend checked_headers

db/migrations/1534295712_create_tend.down.sql

@@ -0,0 +1,4 @@
+DROP TABLE maker.tend;
+
+ALTER TABLE public.checked_headers
+  DROP COLUMN tend_checked;

db/migrations/1534295712_create_tend.up.sql

@@ -11,3 +11,6 @@ CREATE TABLE maker.tend (
   raw_log          JSONB,
   UNIQUE (header_id, tx_idx, log_idx)
 );
+
+ALTER TABLE public.checked_headers
+  ADD COLUMN tend_checked BOOLEAN NOT NULL DEFAULT FALSE;

db/migrations/1534295712_create_tend_table.down.sql

@@ -1 +0,0 @@
-DROP TABLE maker.tend;

db/migrations/1537474562_add_tend_to_checked_headers.down.sql

@@ -1,2 +0,0 @@
-ALTER TABLE public.checked_headers
-    DROP COLUMN tend_checked;

db/migrations/1537474562_add_tend_to_checked_headers.up.sql

@@ -1,2 +0,0 @@
-ALTER TABLE public.checked_headers
-    ADD COLUMN tend_checked BOOLEAN NOT NULL DEFAULT FALSE;