Merge branch '0.3.6-feature-exit-hook-801'

NEWS

@@ -1,6 +1,7 @@
 master:
 * switched to setuptools
 * detached urwidtrees library into separate project (and new dependency)
+* new "exit" hook, called just before the program shuts down
 
 0.3.6:
 * implement vim-style "move last" command (bound to G)

alot/init.py

@@ -185,5 +185,10 @@ def main():
     # set up and start interface
     UI(dbman, cmdstring)
 
+    # run the exit hook
+    exit_hook = settings.get_hook('exit')
+    if exit_hook is not None:
+        exit_hook()
+
 if __name__ == '__main__':
-    main()
+    main()

docs/source/configuration/hooks.rst

@@ -174,3 +174,7 @@ Apart from command pre- and posthooks, the following hooks will be interpreted:
     :type buf: alot.buffer.Buffer
     :param success: true if successfully focused buffer
     :type success: boolean
+
+.. py:function:: exit()
+
+    run just before the program exits