Change release_managers_guide.pod to mention that Module::CoreList
CAVEATS should be updated. This was forgotten when the 5.13.9 release
was made, let's not forget it again.
Also edit Module::CoreList's new version number in its F<Changes> file and
in its F<META.yml> file.
+You should also add the version you're about to release to the
+L<Module::CoreList/CAVEATS> section which enumerates the perl releases
+that Module::CoreList covers.
+
In addition, if this is a final release (rather than a release candidate):
=over 4