[[!comment format=mdwn
 username="joey"
 subject="""comment 13"""
 date="2021-08-11T18:16:41Z"
 content="""
Some special remotes now support incremental update. So far, limited to
ones that use the byteRetriever interface.
Others, that use fileRetriever, including external special remotes, still
need work.
"""]]
