title: Can JSON numbers be quoted?
body: <p>Can there be quotes around JSON numbers? In most of the search links, it seems that numbers do not "require" quotes. But, should the parsers accept both <code>"attr" : 6</code> and <code>"attr" : "6"</code>?</p>
  
  <p>If <code>MyParser</code> has a method <code>getInt</code> to get a number given the key, should <code>MyParser.getInt("attr")</code> return <code>6</code> in both cases, or throw an exception in the latter case? </p>