Update changelog.
Update changelog.

Closes #556

DimensionDataCBUSydney/libcloud,StackPointCloud/libcloud,NexusIS/libcloud,ZuluPro/libcloud,curoverse/libcloud,niteoweb/libcloud,iPlantCollaborativeOpenSource/libcloud,wuyuewen/libcloud,supertom/libcloud,DimensionDataCBUSydney/libcloud,NexusIS/libcloud,erjohnso/libcloud,wrigri/libcloud,StackPointCloud/libcloud,iPlantCollaborativeOpenSource/libcloud,wido/libcloud,ByteInternet/libcloud,samuelchong/libcloud,niteoweb/libcloud,StackPointCloud/libcloud,wuyuewen/libcloud,erjohnso/libcloud,Kami/libcloud,lochiiconnectivity/libcloud,andrewsomething/libcloud,NexusIS/libcloud,mathspace/libcloud,watermelo/libcloud,Kami/libcloud,curoverse/libcloud,SecurityCompass/libcloud,techhat/libcloud,supertom/libcloud,apache/libcloud,vongazman/libcloud,mgogoulos/libcloud,pquentin/libcloud,apache/libcloud,illfelder/libcloud,techhat/libcloud,SecurityCompass/libcloud,ByteInternet/libcloud,techhat/libcloud,illfelder/libcloud,samuelchong/libcloud,t-tran/libcloud,pquentin/libcloud,mistio/libcloud,mathspace/libcloud,illfelder/libcloud,ZuluPro/libcloud,Scalr/libcloud,niteoweb/libcloud,SecurityCompass/libcloud,t-tran/libcloud,mistio/libcloud,mgogoulos/libcloud,Scalr/libcloud,pquentin/libcloud,curoverse/libcloud,erjohnso/libcloud,ZuluPro/libcloud,wido/libcloud,lochiiconnectivity/libcloud,iPlantCollaborativeOpenSource/libcloud,vongazman/libcloud,vongazman/libcloud,ByteInternet/libcloud,cryptickp/libcloud,mistio/libcloud,lochiiconnectivity/libcloud,supertom/libcloud,mgogoulos/libcloud,cryptickp/libcloud,cryptickp/libcloud,wrigri/libcloud,watermelo/libcloud,watermelo/libcloud,t-tran/libcloud,wuyuewen/libcloud,wrigri/libcloud,apache/libcloud,samuelchong/libcloud,andrewsomething/libcloud,Scalr/libcloud,andrewsomething/libcloud,Kami/libcloud,DimensionDataCBUSydney/libcloud,wido/libcloud,mathspace/libcloud