Update ZipState to hold both left and right states
Update ZipState to hold both left and right states

andersio/ReactiveCocoa,sandyway/ReactiveCocoa,ohwutup/ReactiveCocoa,victorlin/ReactiveCocoa,sandyway/ReactiveCocoa,ohwutup/ReactiveCocoa,andersio/ReactiveCocoa,ikesyo/ReactiveCocoa,rpowelll/ReactiveCocoa,ikesyo/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,tzongw/ReactiveCocoa,calebd/ReactiveCocoa,walkingsmarts/ReactiveCocoa,ohwutup/ReactiveCocoa,smilypeda/ReactiveCocoa,tzongw/ReactiveCocoa,victorlin/ReactiveCocoa,tzongw/ReactiveCocoa,sandyway/ReactiveCocoa,walkingsmarts/ReactiveCocoa,smilypeda/ReactiveCocoa,victorlin/ReactiveCocoa,calebd/ReactiveCocoa,andersio/ReactiveCocoa,rpowelll/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,smilypeda/ReactiveCocoa,calebd/ReactiveCocoa,rpowelll/ReactiveCocoa,walkingsmarts/ReactiveCocoa,ReactiveCocoa/ReactiveSwift