(outline-init) New user interface for control of

(outline-init) New user interface for control of
outline-mode session setup, sets up `outline-find-file-hook',
`outline-layout', and `outline-auto-activation'.

(outline-mode-post-command-business, outline-mode)
(outlineify-sticky): Major new mode activation
scheme.  See outline-layout docstring for details.
(outline-layout, outline-use-mode-specific-leader)
(outline-mode-leaders): Variables for new mode-activation scheme.
(outline-expose-topic): New specification format and
optimizations, including thorough accomodation of multiple top-level topics.
(outline-forward-current-level, outline-next-sibling)
(outline-backward-current-level, outline-goto-prefix)
(outline-show-children, outline-up-current-level)
(outline-expose-topic): Behavior refinements and repairs, and
speed optimizations.  Better accomodation for multiple top-level topics.
(outline-recent-end-of-subtree): New state var,
basis for many topic-oriented optimizations.

Revisions of many docstrings, for conformance to
GNU standards and/or clarity.