✨ Function optional arguments

[Ph0enixKM]

Add optional arguments to functions. Here is an example syntax:

fun foo(arg1, arg2 = false) {
  // Code
}

If no value is provided, then the values automatically default to what was assigned in the function parameters

[ramseyharrison]

Is this issue still available? I think I'd be able to complete it.

[Mte90]

It it still open :-) @ramseyharrison

[ramseyharrison]

Here's a pull request regarding the feature, let me know what you think when you get the chance.
#260