[elpa] externals/compat updated (6e021823d8 -> 36bc169cc0)

[ELPA Syncer]

elpasync pushed a change to branch externals/compat.

      from  6e021823d8 Swap release manual and snapshot manual links
       new  db9321e222 Add provided-mode-derived-p from Emacs 27
       new  46b44c3be1 Add derived-mode-p from Emacs 27
       new  36bc169cc0 Avoid using when-let in provided-mode-derived-p


Summary of changes:
 compat-27.el    | 23 +++++++++++++++++++++++
 compat-tests.el | 23 +++++++++++++++++++++++
 compat.texi     | 13 +++++++++++++
 3 files changed, 59 insertions(+)