Try to make Muse play nice with outline minor mode.
* lisp/muse-colors.el (muse-colors-emphasized, muse-colors-emphasized)
(muse-colors-underlined, muse-use-font-lock, muse-link-properties): Use
"muse" instead of "t" when adding invisibility to text or checking for
invisibility.
* lisp/muse.el (muse-add-to-invisibility-spec): New function that is a
compatibility wrapper for `add-to-invisibility-spec'; XEmacs doesn't have
this function.
git-archimport-id: mwolson@gnu.org--2005/muse--main--1.0--patch-72