Changes to base

Changes to base:
commit 58e503f4268737b08454930548ba8b2059b8ea5b
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Wed Feb 5 23:16:10 2014 +0100

    Add release note about new `SomeAsyncException`

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>