updated Core submodule
Merge branch 'master' of github.com:soomla/ios-store

* 'master' of github.com:soomla/ios-store:
  updated submodules
  removed library dependency in build project
  pulled changes from Core and rebuilt library
  fixed typo in class name and rebuilt library
  rebuilt libraries
  Fixed an issue when saving value to balances dict
  Added a helper function in StoreInventory to fetch the state of balances in the game
  fixed changelog
  Updated submodules and rebuilt libraries