Drop support for Xcode 6 #674
Description
Currently, our SDK supports Xcode 6 as well as Swift 1.2, which have both been deprecated since the release of Xcode 7 on September 16, 2015.
At this point, given the clear migration paths that exist from Swift 1.2 to 2.0, we see no reason to maintain support for Xcode 6.x, and plan on dropping support entirely starting January 1, 2016.
This will NOT effect any current SDK releases that exist, as these will purely be SDK changes, not back-end changes.
The most notable client side changes will be removal of the PF_GENERIC macro for backwards compatible objective-c generics.
If you have any questions or concerns for this change, please post them below.