Adding a setter to set the block associated with the delegate call for getting a new NSInputStream
Merge branch 'master' into feature/needNewBodyStreamBlockSetter
Set the image placeholder only if isn't nil
Enabled certificate pinning in demo project
Authorize users to have self-signed pinned certificates
All the hipsters use xcpretty

/cc @mneorr
Fixed static analyzer warning

The analyzer was complaining that it would be possible to assign nil to a mutable dictionary.
[Issue #1803] Making reachabilityManager property readwrite
Merge pull request #1801 from philippec/master

Fixed static analyzer warning
[Issue #1801] Additional logic necessary to avoid catching NSParameterAssert for delegate
Merge pull request #1788 from FredericJacobs/patch-1

Authorize users to have self-signed pinned certificates
Merge pull request #1768 from alexito4/master

Set the image placeholder only if isn't nil
Refactor session task state observing

1) Let's do all the logic in one place, when we setup the delegate. This
   removes having 4 different addObserver's and 4 different removeObserver's.

2) Using selectors for keypaths so we have compile time checking that a `state`
   method exists.
Change pragma mark to correct protocol

Update a simple mis-labelling
Merge pull request #1809 from sevntine/patch-1

Change pragma mark to correct protocol
[Issue #1807] Updating documentation for manager reachability client
Merge branch 'master' of github.com:AFNetworking/AFNetworking
Using @selector instead of keys for associated objects
Fixing potential vulnerability caused by hard-coded multipary form data boundary. Thanks to Mathias Bynens & Tom Van Goethem for finding and disclosing this.

Signed-off-by: Mattt Thompson <m@mattt.me>
[Issue #1477] Adding lock around setting of finished state.