+Library
+-------
+
+Correct documentation about transactions.
+
+Add a configurable automatic commit of transactions. See
+`database.autocommit` in notmuch-config(1).
+
+Document the algorithm used to find a database.
+
+CLI
+---
+
+Define format version 5, which supports sorting the output of
+notmuch-show.
+
+Emacs
+-----
+
+`notmuch` no longer sets `mail-user-agent` on load. To restore the
+previous behaviour of using notmuch to send mail by default, customize
+`mail-user-agent` to `notmuch-user-agent`.
+
+`notmuch-company` now works in `org-msg`.
+
+Improve the display of messages from long threads in unthreaded mode.
+
+Prefer email addresses over User ID when showing valid signatures.
+
+Define a new face `notmuch-jump-key`.
+
+New commands in notmuch-tree view: `notmuch-tree-filter` and `notmuch-tree-filter-by-tag`.
+
+Honour `notmuch-show-text/html-blocked-images` when using `w3m` to
+render html.
+
+Support toggling sort order in notmuch-tree mode.
+
+Ruby
+----
+
+Memory management of allocated notmuch objects (database, messages,
+etc...) is now done via the Ruby GC. This removes all constraints on
+the order of object destruction. Database close and destroy are
+split, following an old library API change.
+