2.0-alpha

Changed

• Exception Disque\Connection\ResponseException has been moved to
  Disque\Connection\Response\ResponseException
• The Disque constructor has changed, so instead of receiving an array of
  IP addresses, it now receives an array of Credentials, where each Credentials
  instance refers to a specific Disque node, and allows the use of passworded
  nodes.
• JobInterface has changed to add the following methods: getBody(),
  setBody(), getQueue(), setQueue(), getNacks(), setNacks(),
  getAdditionalDeliveries(), setAdditionalDeliveries()
• The pull() method in Queue no longer throws a JobNotAvailableException
  if no job is available, but instead returns null.
• The JobNotAvailableException has been removed, as no jobs being available
  is not actually an exception, but a possible acceptable outcome.
• ManagerInterface no longer has the getConnectionClass() and
  setConnectionClass() methods. Instead it uses the new setConnectionFactory()
  method to allow one to specify a connection factory.

Added

• Added Node, which handles the connection to a specific node.
• Added the failed() method to Queue which can be used to mark a job as
  failed, therefore increasing its NACK counter.
• Added ConnectionFactoryInterface, used by ManagerInterface, to create
  a new connection to redis.
• Added ConnectionFactoryInterface implementation classes PredisFactory
  and SocketFactory
• Added NodePrioritizerInterface to allow customizing the way the client
  switches through nodes based on a specific strategy.
• Added NodePrioritizerInterface implementation classes
  ConservativeJobCountPrioritizer, RandomPrioritizer and NullPrioritizer
• Added option withcounters to the $options argument in getJob() which
  allows the returned job to include its NACK and additional deliveries
  counters.
• Added support for NACK