update

1. add cron module
2. add pool module
3. add tcgplayer background job
4. add card price model

schema/20190116-1.sql

@@ -0,0 +1 @@
+alter table card_price drop constraint card_price_pk;

schema/dbVersion.json

@@ -2,7 +2,8 @@
   "versions": [
     {"file": "main.sql", "version": 1},
     {"file": "20190106-1.sql", "version": 2},
-    {"file": "20190115-1.sql", "version": 3}
+    {"file": "20190115-1.sql", "version": 3},
+    {"file": "20190116-1.sql", "version": 4}
   ],
   "test": []
 }