[PARSE BUG]: Issues with operators

[HaydenMichel8]

Problem description

I have been having some issues with ::operator functions:
foo::operator bar() {;}
When this is replaced to have capital OPERATOR it works.
(This is a known issue #94)

But for this one even with a capital OPERATOR it has a parse error with the bool:
foo::operator bool() const { return bar; }

C++ code that can't be parsed correctly (please double-check that https://robotpy.github.io/cxxheaderparser/ has the same error)

foo::OPERATOR bool() const { return bar; }

[virtuald]

As you said, duplicate of #94, but fixed in #153