updated version of GWT libs, apps and games

I am releasing today a new version of most my GWT libs, apps and games.

lib-gwt-svg 0.5.6 brings several additional features, such as support for SVG drag-and-drop and CSS/SVG backgrounds. lib-gwt-file 0.3.1 brings a working implementation of Blob.slice and support for large files (up to 2^56 bytes long). svgreal 0.2.2 provides support for image element […]