docs(index): describe your change... (#4228)
docs(index): describe your change... (#4228)

fromPromise has been removed from public API
trxcllnt/RxJS,trxcllnt/RxJS,martinsik/rxjs,ReactiveX/rxjs,kwonoj/RxJS,ReactiveX/rxjs,benlesh/RxJS,ReactiveX/RxJS,ReactiveX/rxjs,ReactiveX/RxJS,benlesh/RxJS,kwonoj/RxJS,kwonoj/RxJS,ReactiveX/RxJS,kwonoj/RxJS,Brocco/RxJS,ReactiveX/rxjs,Brocco/RxJS,martinsik/rxjs,martinsik/rxjs,trxcllnt/RxJS,ReactiveX/RxJS,Brocco/RxJS,benlesh/RxJS,trxcllnt/RxJS,Brocco/RxJS,martinsik/rxjs,benlesh/RxJS