+`notmuch_database_get_directory` and
+`notmuch_database_find_message_by_filename` now work on read-only
+databases
+
+ Previously, these functions attempted to create directory documents
+ that didn't exist and would return an error or abort when given a
+ read-only database. Now they no longer create directory documents
+ and simply return a `NULL` object if the directory does not exist,
+ as documented.
+
+Fix compilation of ruby bindings.
+
+ Revert to dynamic linking, since the statically linked bindings did
+ not work well.
+