The White Hat and Suggested Lakota Orthography are represented here
by three different input modes: A prefix and postfix mode for the SLO,
and a postfix mode for the White Hat orthography.
* lisp/leim/quail/latin-post.el (lakota-slo-postfix)
(lakota-white-hat-postfix):
* lisp/leim/quail/latin-pre.el (lakota-slo-prefix): New input methods.
* etc/HELLO: Call out the additions.