Gcc bug with std::is_convertable and is_assignable was found. Good variants were added.
operator == was added (not yet complete)
	modified:   prototype/Signals-test/src/Test.cpp
	modified:   prototype/Signals/src/Signals.cpp
	modified:   prototype/Signals/src/signals/Slot.h
	new file:   prototype/Signals/src/signals/type_traits.h
At last a good variant was found for slots comparison)
	modified:   Signals-test/src/Test.cpp
	modified:   Signals/src/Signals.cpp
	modified:   Signals/src/signals/Slot.h
	modified:   Signals/src/signals/TemplateHelpers.h
	deleted:    Signals/src/signals/type_traits.h