Random-access access to `List` when iterating is `O(n^2)` (`O(n)` when
accessing a single element)
* Removed subscript operator, in favor of a more explicit `get`
* Added conversion from `Iterator` to `ConstIterator`
* Remade existing operations into other solutions when applicable
When the types are validated at compile time, this type of call runs
faster. It is already used for instance methods, this adds this
optimization to native static methods as well.
This method is registered in a special way so ClassDB doesn't naturally
know about its existence. Here it is hardcoded if any other option fail
to check if it is about the `free()` method and, if so, say it exists
and return a Callable.
This improves the performance of typed calls to engine methods when the
argument types are exact.
Using validated calls delegate more of the work the core instead of
doing argument unpacking in the VM. It also does not need different
instructions for each return type, simplifying the code.
Within a match statement, it is now possible to add guards in each
branch:
var a = 0
match a:
0 when false: print("does not run")
0 when true: print("but this does")
This allows more complex logic for deciding which branch to take.