4.4.0
Improves performance by consolidating notifications and deallocations
- fewer calls to dispatch_async
- more work done in each dispatch_async
Improvements to and full testing of DeferredURLSessionTask.
Added a split method for any Deferred whose value type is a tuple of 2, 3 or 4 elements. The return value is a tuple of Deferred; if the original Deferred's outcome is an Error, then every Deferred in the split is determined with the same Error.