2.2.5: * Accumulators: Allow return types that are different to the signal's. (Krzysztof KosiƄski) * Documentation: - Disable collaboration graphs in documentation - Use non-blurry font for graph labels. (Daniel Elstner) - sigc::hide() correction: It always only hides one signal argument. (Michael Hasselmann) * Fix the MSVC++ build. (Armin Burgmeier)