title: When Lambda is invoked by SNS, will there always be just 1 record?
body: <p>When receiving events in Lambda from SNS the outer structure of the event will look somewhat like:
  { "Records": [...] }</p>
  
  <p>In all the tutorials I have seen there has only ever been 1 record in the records field.</p>
  
  <p>Is it safe to make the assumption that the "Records"-array will only ever contain 1 item?</p>