0.4.1

RMStore

• Fixes bug preventing product request notifications from being received (c198cc9).

RMStoreKeychainPersistence

• Fixes #28: compilation warnings due to NSCAssert when building for release.
• Improve performance by caching keychain transactions (0705b4f).
• Return an empty transactions dictionary if JSON parsing fails (0705b4f).
• Log errors instead of using assertions (2f82446, 4fc050c).

Other

• Fixes #22: add OpenSSL to the podspec (bb65856).