Using early return in AFURLConnectionOperation -setState: to avoid posting notifications in lock
[Issue #737] Updating default Accept-Language header value in AFHTTPClient
Replacing NULL check for creation of static dispatch queues with dispatch_once for thread safety.
Whitespace formatting by Xcode re-indentation
Merge branch 'experimental-issue-738'

Conflicts:
	AFNetworking/AFURLConnectionOperation.m
Fixing @param name to correspond to actual parameter (filename -> fileName)
Fixing warning caused by default statement in switch statement that covered all enumeration values
Revert "Fixing warning caused by default statement in switch statement that covered all enumeration values"

This reverts commit b5c48f13a1d42952da78ab3027b7d804048f525b.
Fix  [Issue #751]
Serialize calls to responseJSON using a lock.

AFJSONRequestOperation's completion path calls `responseJSON` from a
processing queue.  Because `responseJSON` "lazily" deserializes the
response data into a JSON object, it needs to be protected against
concurrent access from other queues (threads).

For example, `AFNetworkingOperationDidFinishNotification` is posted
when the operation finishes but perhaps before that processing queue
has finishing executing.  Notification observers who also access
`responseJSON` end up in a race with that queue that often leads to a
crash.

We reuse the existing lock from our AFURLConnectionOperation base
class.
[Issue #769] Resolving asymmetry in cached image case for UIImageView category
Updating OS X project settings
Merge pull request #768 from jparise/response-json-lock

Serialize calls to responseJSON using a lock.
Cleaning up formatting from pull request

Adding @dynamic for lock property
Merge branch 'master' of https://github.com/Fl0p/AFNetworking into Fl0p-master
[Issue #767] Consolidating macros
Wrapping AFHTTPBodyPart switch statement with #pragma to ignore -Wcovered-switch-default
Fixes warning: multiple methods named 'postNotificationName:object:' found [-Wstrict-selector-match]
Fixes warning: multiple methods named 'objectForKey:' found [-Wstrict-selector-match]
Fixes warning: weak receiver may be unpredictably set to nil [-Wreceiver-is-weak]

Signed-off-by: Mattt Thompson <m@mattt.me>