critcl::enum - Added internal comment to clarify code.
critcl::bitmap - Updated docs regarding existence/creation of C values, contrasting to critcl::enum.
Create a new package critcl::emap which is similar to critcl::bitmap, just single code to single string, instead of flags to lists. Essentially a variant of critcl::enum with bitmake-like behaviour regarding handling of C values (use existing, no creation).
TODO: Look into use of fast direct mapping tables when the definition contains only integers and nothing symbolic.