Added two hacks: one for operators in general, one for a parser issue.
1. Visit the class as a declaration context when checking operator overloads - otherwise operators in nested types are not checked; this is, however, not the proper solution because all visiting of classes should be refactored so that this and any other methods are always called as necessary;
2. A single conversion operator in Qt misleads the parser into resolving a function pointer while it is (most probably) not; this caused a subsequent crash.

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>
Updated the news about the conversion operators.

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>