[Issue #1392] Documenting contingent behavior of SCNetworkReachabilityCreateWithName
[Issue #1677] Fix issue with network reachability callbacks
Revert "[Issue #1392] Documenting contingent behavior of SCNetworkReachabilityCreateWithName"

This reverts commit 4955f243672a26d4be35bb209e8aa723338684f8.
[Issue #1696] Removing unnecessary check for self.completionHandler in HTTP manager
[Issue #1703] Checking for non-nil delegate in URLSession:didCompleteWithError:

Signed-off-by: Mattt Thompson <m@mattt.me>
[Issue #1734] Making notification constant naming consistent with terminology of NSURLSession
Bumping version to 2.1.0
Sorting set members during query string parameter serialization

Using case sensitive compare when sorting set members and dictionary keys in query string serialization
Removing unused format property in AFJSONRequestSerializer
Adding missing NSCoding and NSCopying implementations for AFJSONRequestSerializer
Removing unused acceptablePathExtensions class method