• New parameter: auto_recrawl - auto restart task every age.
• New parameter: js_viewport_width/js_viewport_height to set viewport size for phantomjs engine.
• New command line option to set different message queue backends with URI scheme.
• New task level storage mechanism: self.save
• New redis taskdb
• New redis message queue.
• New high level message queue interface kombu.
• Fix bugs related to mongodb (keyword missing if not set).
• Fix phantomjs not work in all mode.
• Fix a potential deadlock in processor send_message.
• Default log level of scheduler is changed to INFO