Adjust Cart\Resolver\ItemResolverInterface to remove dependency on Symfony Request class
Re-use existing interface instead of re-declaring same methods
Merge pull request #1234 from stloyd/feature/cart_resolver

Adjust Cart\ItemResolverInterface to remove dependency on Symfony Request class
Update phpspec to stable version, fix failing spec of PurchaseStep
Merge pull request #1242 from stloyd/bugfix/phpspec

Update phpspec to stable version, fix failing spec of PurchaseStep