=str #15221 Fix typo in scaladoc
Merge pull request #15221 from guersam/wip-fix-typo

=str #15221 fix typo in scaladoc
+str : Various cleanups of internal streams architecture

 - factor out receive blocks for inputs and outputs
 - pump uses TransferPhases and become
 - Unification of Transformer and RecoveryTransformer
Merge pull request #15194 from drewhk/wip-stream-cleanups-drewhk

+str Various cleanups of internal streams architecture
Fixes #15158
+str #15173 Add user support for actor consumer endpoint

* with full control over back pressure
* and pluggable request strategy