Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes. Fixed a minor bug where layouts with the same id but without shared alignments would be messed up. Tracked down the "nothing trawn until a resize" bug (see jobs.txt). If widgets throw during creation they're now replaced by debug widgets. Function pointers are converted to delegates using a safer method.

module mde.util;

/// Not my code: http://www.dsource.org/projects/tango/ticket/1174#comment:7
R delegate(T) toDg(R, T...)(R function(T) fp) {
    if (!fp) return null;
    struct dg {
        R opCall(T t) {
            return (cast(R function(T)) this) (t);
        }
    }
    R delegate(T) t;
    t.ptr = fp;
    t.funcptr = &dg.opCall;
    return t;
}