* first cleanup pass
* More cleanup and removal of delegate methods.
* Framework compiling.
* completion -> completionBlock
* Tests compiling.
* Tests running.
* Update restore tests.
* Make restore block based.
* fix restore failure case.
* Tests passing for non-purchase methods.
* Change purchase method to a block.
* Lol its done.
* Failing test for multiple calls to callback.
* Only call calback once.
* Add tests to ensure only called for the same product.
* Addd test case for calling purchase twice.
* Issue an error if a purchase is attempted for the same product twice.
* Update originalApplicationVersion tests.
* Update delegate tests.
* Set delegate on launch.
* Handle fetching latest purchaser info.
* Remove uneeded calls.
* Cleanup.
* Changes based on test integration.
* Add tests for idempotency
* Refactor callbacks cache.
* Add caching for subscriber GET.
* Cache calls getEntitlements
* Add an isEqual implementation to RCPurchaserInfo
* RCPurchaserInfo -> PurchaserInfo in Swift
* Basic is equal case.
* If active entitlements changes, not equal.
* Add failing test case.
* Fix duplicate makePurchase calls.
* Create a macro for dispatching.
* Move cache checking out of updateCaches.
* Fix race condition.
* Caches last updated doesn't apply to entitlements.
* Refactor caching methods.
* Add more macros.
* Also clear entitlements cache.
* More intelligently handle cache in the getters.
* Get rid of updatePurchaserInfo.
* Simulate deferred called.
* Calls delegate on initialization.
* Review feedback/
* Call delegate when random transactions fire.
* Only send new purchaser info when something changes.
* Make other delegate calls on change only.
* Expect fewer delegate calls.
* Eliminates the need for use_frameworks\!
* Make it more swifty.
* Make more swifty and add price localization.
* Smarter cache handling.
* Improved purchaser info logging.
* Fix RCPurchaserInfo description
* Make products fetching idempotent.
* Rename delegate method for updated purchaser info
* Rename products method.
* Start adding logs.
* Log all the things.
* Fix tests
* Logging for identify and alias.
* Update version numbers and copyright.
* Accept subscription_group_id on post receipt
* Send subscription group identifier.
* Add test for posting subscription group.
* Add failing test for getting missing products.
* Fetch products if missing.
* Cache produts on makePurchase.
* Call delegate even if there is a completion block.
* Log when we set two singletons.
* Setup reset callback.
* Add callback to reset.
* Start cleanup and fix bug.
* Reorganize methods.
* updated some comments in RCPurchases.h
* Add failing tests for identity methods calling delegate.
* Call delegate when calling reset, identify, etc.
* didReceiveUpdated
* Rename delegate method.
* Update README
* README update
added swift and Obj-C labels
* added sample app and updated readme
* removed shared instance setter
* fixed obj-c tag in code sample
* update call delegate when set
* Added OS_ACTIVITY_MODE callout
* Updated code snippets
* make both delegates optional
* Version 2.0.0-rc1
* Update 2.0.0 instructions
Updated install instructions for 2.0.0-rc
* Adds more installation instructions
* Added v2.0 doc links
* adds missing documentation
* Makes sure we don't create alias or identify over the same app user id
* Some small review stuff.
* Fix compile issue.
* updated README
