Sends a new message with the currently authenticated user as the sender. The XML for the new message is returned on a successful request.
The valid types are:
If an explicit type is omitted, it will be inferred from the content (e.g., if the message contains new line characters, it will be considered a paste).
Newline characters are ignored for TextMessages. In order to include newlines inside of a PasteMessage, use this escape code: 

<message>
<type>TextMessage</type>
<body>Hello</body>
</message>
Status: 201 Created
<message>
<id type="integer">1</id>
<body>Hello</body>
<room-id type="integer">1</room-id>
<user-id type="integer">2</user-id>
<created-at type="datetime">2009-11-22T19:11:41Z</created-at>
<type>TextMessage</type>
<starred>false</starred>
</message>
Highlights a message.
Status: 200 OK
Removes a message highlight.
Status: 200 OK