title: disable NOTICES in psql output
body: <p>How do I stop psql (PostgreSQL client) from outputting notices? e.g.</p>
  
  <blockquote>
    <p>psql:schema/auth.sql:20: NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "users_pkey" for table "users"</p>
  </blockquote>
  
  <p>In my opinion a program should be silent unless it has an error, or some other reason to output stuff.</p>