bug#23244: 24.4; let-alist does not handle vectors

[Noam Postavsky]

Lars Ingebrigtsen <larsi@gnus.org> writes:

>> I bumped the version to 1.0.6, so the fix should appear on ELPA soon.
[the new version is there now]

> Great; thanks.  That's all you have to do to have the internal libraries
> that are also in ELPA?

Yes, at least for any libraries listed as :core in
<https://git.savannah.gnu.org/cgit/emacs/elpa.git/tree/externals-list>.