Commented Task: Update : [direct_messages] [2510]

Reference : https://dev.twitter.com/docs/api/1.1/get/direct_messages

Methods to update :
- User.GetDirectMessagesSent()

Parameters to add :
- since_id
- max_id
- count
- skip_status
- include_entities
Comments: Associated with changeset 41815: Version 0.9.5.0
- Added additional parameters to Message.GetLatestsReceived
- Added additional parameters to Message.GetLatestsSent