unsigned long long -> int64_t
Adding UIWebView+AFNetworking
Moving UIKit extensions to UIKit+AFNetworking
Removing unused functions
AFHTTPRequestOperation success/failureCallbackQueue -> completionQueue & completionGroup
Moving parameter serialization into AFSerialization
Replacing AFPercentEscapedQueryStringPairMemberFromStringWithEncoding with stringByAddingPercentEncodingWithAllowedCharacters:
Minor refactoring
Jotting down thoughts about AFURLRequestConfiguration
Reorganizing content type operations