Applied patch from inkel to add encoding argument to all
serialization related methods.
Fixed XMLSerializer bug regarding default namespace bindings.
Fixed namespace binding bug involving binding a second default
namespace.
Applied patch from Gunnar AAstrand Grimnes to add context
support to __iadd__ on Graph. (Am considering the lack of
context support a bug. Any users currently using __iadd__, let
me know if this breaks any of your code.)
Added Fourthought backend contributed by Chimezie Ogbuji.
Fixed a RDF/XML parser bug relating to XMLLiteral and
escaping.
Fixed setup.py so that install does not try to uninstall
(rename_old) before installing; there's now an uninstall
command if one needs to uninstall.