`null` keyword is not the default value for unassigned variables.

[spralja]

let a;
print(a);

prints:

None

let a = null;
print(a);

raises an runtime error, and so does:

print(null);

[miningape]

I'm pretty sure this is an issue with the print function not the default value for unassigned variables, unless its using the bytecode interpreter?
(In the interpreter null ==: Literal(None) so i guess its an error caused by returning none or something and when a variable is made it is declared like so environment[name] = None so thats why it prints None but the only way to fix this afaik is by adding a rule in the print fn)