Update changelog with public bag and atomic
Update changelog with public bag and atomic

sandyway/ReactiveCocoa,ikesyo/ReactiveCocoa,sandyway/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,smilypeda/ReactiveCocoa,sandyway/ReactiveCocoa,victorlin/ReactiveCocoa,tonyarnold/ReactiveCocoa,natestedman/ReactiveCocoa,calebd/ReactiveCocoa,tonyarnold/ReactiveCocoa,ohwutup/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,tzongw/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,smilypeda/ReactiveCocoa,andersio/ReactiveCocoa,yonekawa/ReactiveCocoa,paulyoung/ReactiveCocoa,llb1119/test,victorlin/ReactiveCocoa,natestedman/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,calebd/ReactiveCocoa,rpowelll/ReactiveCocoa,Farteen/ReactiveCocoa,ohwutup/ReactiveCocoa,llb1119/test,Farteen/ReactiveCocoa,ikesyo/ReactiveCocoa,victorlin/ReactiveCocoa,yonekawa/ReactiveCocoa,kevin-zqw/ReactiveCocoa,paulyoung/ReactiveCocoa,tzongw/ReactiveCocoa,walkingsmarts/ReactiveCocoa,ohwutup/ReactiveCocoa,walkingsmarts/ReactiveCocoa,Juraldinio/ReactiveCocoa,rpowelll/ReactiveCocoa,andersio/ReactiveCocoa,Juraldinio/ReactiveCocoa,kevin-zqw/ReactiveCocoa,smilypeda/ReactiveCocoa,natestedman/ReactiveCocoa,kevin-zqw/ReactiveCocoa,walkingsmarts/ReactiveCocoa,tonyarnold/ReactiveCocoa,calebd/ReactiveCocoa,paulyoung/ReactiveCocoa,andersio/ReactiveCocoa,rpowelll/ReactiveCocoa,Farteen/ReactiveCocoa,tzongw/ReactiveCocoa,Juraldinio/ReactiveCocoa,llb1119/test,yonekawa/ReactiveCocoa,ReactiveCocoa/ReactiveSwift