Swizzling, F-Strings, and Underscore Iterators/Variables

[durkisneer1]

It would be nice to be able to assign a Vector2 to a Vector3 such as Vector3.xz = Vector2(x, y) through swizzling, same for similar situations for other array types. F-Strings would make cleaner formatted string writing instead of the text = "Score: %s" % score mess. As for underscore variables, it would remove the need to use characters when writing for loops where the iterator/variable is unused. Ex: for _ in range(len): print("hello")

[AThousandShips]

See:

• Allow to get multiple coordinates of vectors at the same time (swizzling) #727
• Add literal quoted strings with embedded variables (f-strings) to GDScript #157
• Introduce a variable-free loop #1282

Closing as these are all proposed, in the future please make one proposal for one feature, not multiple vert different features in one