Class Constant Visibility BC Break

Hi,

I encountered a problem of my library with the new class constant
visibility functionality.

The problem is that I'm using ReflectionClass::getConstants() to detect
class constants but I'm only interested in public constants.

Before class constants were public by definition but now it can be
private and protected, too.

I know the new methods ReflectionClass::getReflectionConstants are
available to detect exactly what I need and that's fine!

But of course using ReflectionClass::getConstants() no longer returns
public class constants by default.

So for me this is a BC break but it wasn't listed in the RFC.

I don't know if it was discussed before but it could be avoided by
adding an argument to ReflectionClass::getConstants() to filter by
visibility which defaults to public.

Thoughts?

PS: I'm talking my library to emulate enumerations
https://github.com/marc-mabe/php-enum/blob/master/src/Enum.php#L295-L327

but this BC break happens to all using ReflectionClass::getConstants()
for public constants only e.g. accessing values later with constant().

Cheers

Marc