notmuch_database_find_message_by_filename does exactly what it says.
+Python bindings changes
+-----------------------
+
+ - Re-encode python unicode objects to utf-8 before passing back to
+ libnotmuch.
+ - Support Database().begin_atomic()/end_atomic()
+ - Support Database().find_message_by_filename()
+ NB! This needs a db opened in READ-WRITE mode currently, or it will crash
+ the python process. The is a limitation (=bug) of the underlying libnotmuch.
+ - Fixes where we would not throw NotmuchErrors when we should (Justus Winter)
+
+Ruby bindings changes
+---------------------
+
+ Wrap new library functions notmuch_database_{begin,end}_atomic,
+ and add new exception Notmuch::UnbalancedAtomicError. Rename destroy
+ to destroy! according to Ruby naming conventions.
+
Notmuch 0.8 (2011-09-10)
========================