message: BREAKING CHANGE: Add ccg19cdh attribute to ccgs model
  This adds the CCG short code/id to the ccgs table
diff: @@ -6,7 +6,11 @@ const { inherits } = require("util");
  const AttributeBase = require("./attribute_base.js");
  function Model() {
  - AttributeBase.call(this, TABLE_NAME);
  + const schemaAddition = {
  + "ccg19cdh": "VARCHAR(32) NULL UNIQUE",
  + };
  +
  + AttributeBase.call(this, TABLE_NAME, schemaAddition);
  }
  inherits(Model, AttributeBase);
  