[gnu] externals/org updated (aa4cd87d86 -> 4a38e4d4cc)

[ELPA Syncer]

elpasync pushed a change to branch externals/org.

      from  aa4cd87d86 org-lint: Add check for priorities
       new  8ace409381 ox-man: Add support for footer-inside and header-middle
       new  4a38e4d4cc org-element-plain-list-parser: Add diagnostics to catch 
cache bug


Summary of changes:
 etc/ORG-NEWS        |  6 ++++
 lisp/org-element.el | 92 +++++++++++++++++++++++++++++------------------------
 lisp/ox-man.el      | 28 ++++++++++------
 3 files changed, 74 insertions(+), 52 deletions(-)