• Use Future instead of CPS::Future
  
• Created IO::Async::Future subclass
  
• Initial support for Futures on Loops
  
• Rewrite lots of internals to use Futures instead of MergePoints or
  other logic
  
• Renamed all "task" to "future" in APIs
  
• Allow packing of inet/inet6 address structures to omit the IP or
  port and presume passive or port 0
  
• Removed $notifier->get_loop synonym
  
• Make IO::Async::MergePoint throw a deprecation warning