Add a form of when that takes an array
Add a form of when that takes an array
pgherveou/PromiseKit,pgherveou/PromiseKit,mxcl/PromiseKit,mxcl/PromiseKit,pgherveou/PromiseKit,allen-zeng/PromiseKit,mxcl/PromiseKit,allen-zeng/PromiseKit