[GNU ELPA] Org version 9.4.4

[ELPA update]

Version 9.4.4 of package Org has just been released in GNU ELPA.
You can now find it in M-x package-list RET.

Org describes itself as:
  Outline-based notes management and organizer

More at https://elpa.gnu.org/packages/org.html

Recent NEWS:

ORG NEWS -- history of user-visible changes.   -*- mode: org; coding: utf-8 -*-

#+STARTUP: overview

#+LINK: doc https://orgmode.org/worg/doc.html#%s
#+LINK: git https://code.orgmode.org/bzg/org-mode/commit/%s

Copyright (C) 2012-2020 Free Software Foundation, Inc.
See the end of the file for license conditions.

Please send Org bug reports to mailto:emacs-orgmode@gnu.org.

* Version 9.5 (not yet released)
* Version 9.4
** Incompatible changes
*** Possibly broken internal file links: please check and fix

A bug has been affecting internal links to headlines, like

: [[*Headline][A link to a headline]]

Storing a link to a headline may have been broken in your setup and
those links may appear as

: [[*TODO Headline][A link to a headline]]

Following the link above will result in an error: the TODO keyword
should not be part of internal file links.

You can use the following command to fix links in an Org buffer:

#+begin_src emacs-lisp
(defun org-fix-links ()
  "Fix ill-formatted internal links.
E.g. replace [[*TODO Headline][headline]] by [[*Headline][headline]].
Go through the buffer and ask for the replacement."
  (interactive)
  (visible-mode 1)
  (save-excursion
    (goto-char (point-min))
    (let ((regexp (format "\\[\\[\\*%s\\s-+"
                          (regexp-opt org-todo-keywords-1 t))))
      (while (re-search-forward regexp nil t)
        (when (and (save-excursion
                     (goto-char (match-beginning 0))
                     (looking-at-p org-link-bracket-re))
                   (y-or-n-p "Fix link (remove TODO keyword)? "))
          (replace-match "[[*")))))
  (visible-mode -1))
#+end_src

*** Calling conventions changes when opening or exporting custom links

This changes affects export back-ends, and libraries providing new
link types.

Function used in ~:follow~ link parameter is required to accept a
second argument.  Likewise, function used in ~:export~ parameter needs
to accept a fourth argument.  See ~org-link-set-parameters~ for
details.

Eventually, the function ~org-export-custom-protocol-maybe~ is now
called with a fourth argument.  Even though the 3-arguments definition
is still supported, at least for now, we encourage back-end developers
to switch to the new signature.

*** Python session return values must be top-level expression statements

Python blocks with ~:session :results value~ header arguments now only
return a value if the last line is a top-level expression statement.
Also, when a None value is returned, "None" will be printed under
"#+RESULTS:", as it already did with ~:results value~ for non-session
blocks.

*** In HTML export, change on how outline-container-* is set

When the headline has a =CUSTOM_ID=, use this custom id to build the
div id.  For example, if you have =:CUSTOM_ID: my-headline= then the
resulting <div> will be ~<div id="outline-container-my-headline">~.

You may want to check whether your HTML files are rendered differently
after this change.

*** New keybinding =<C-c C-TAB>= for ~org-force-cycle-archived~

~org-force-cycle-archived~ used to be associated with =<C-TAB>= but
this keybinding is used in Emacs for navigating tabs in Emacs.  The
new keybinding is =<C-c C-TAB>=.

** New default settings for some options

These options now default to =t=:

- ~org-loop-over-headlines-in-active-region~
- ~org-fontify-done-headline~
- ~org-src-tab-acts-natively~

You may want to read the docstrings of these options to understand the
consequences of this change.

Also, ~org-startup-folded~ now defaults to ~showeverything~.

** New features

*** Looping agenda commands over headlines

~org-agenda-loop-over-headlines-in-active-region~ allows you to loop
agenda commands over the active region.

When set to =t= (the default), loop over all headlines.  When set to
='start-level=, loop over headlines with the same level as the first
headline in the region.  When set to a string, loop over lines
matching this regular expression.

*** New minor mode ~org-table-header-line-mode~...
...