It appears that the list of issues fixed in Release Notes for 0.17.4 is
a straight copy of 0.17.3. A `git diff v0.17.3..v0.17.4` and a little
annotate later turned up these fixed issues instead.
These dates were pulled out of the Git commit for the tag (with a Vim
macro). I didn't go back before we started tagging releases with
annotated tags since that would take some mailing list archaeology. Also
there might be a couple instances where the tag came plus or minus a day
or two from the announcement.
Closes#9426
