Mark in documentation the completedness of a Builtin function

[rocky]

One of the cool things Symja has in its documentation is to mark the completeness of a builtin function.

Mathics3 should do likewise. However, I think one additional feature would be to mark to what WMA level a function is complete.

For example, something might be complete with respect to Version 11 of WMA, but then version 12 comes out and extends the function. If something is marked complete up to 11 (it will still always be). Similarly we can mark the earliest version for which a builtin function appears. Wolfram docs give a date when something was introduced, but better is a version number.