Fixes 65851418_about_constants_master

* I learned that nested constants can be referenced with both relative and complete paths
* Top level constants are referenced by double colons
* Nested classes inherit constants from the classes that enclose them
* Subclasses inherit constants from parent classes
* Nested constants win over inherited constants
* However, explicitly scoping on class definition will cause it to inherit (not sure how to word that)

[#65851418]