Improve abs() function

[KemGus]

Why have a separate function (positive) instead of improving abs?

The issue:
you can't return positive vector, without doing either

1. Vector=positive(vector rv1)
2. Vector = (abs(vector:x(), abs(vector:y(), abs(vector:z())

I want it to be
Vector = abs(vector)

[thegrb93]

The absolute value of a vector mathematically is it's length, so I guess they didn't want to trip up people who would expect abs(vec) to return the length.

[vurvdev]

This would be adding an overload abs(vector v), not improving the existing abs(number n).

Doing this would warrant deprecating positive and the potential name confusion from Sparky's message above. Gates also have "positive" instead of "abs(v)" so I think it's fine keeping it as is.

[vurvdev]

Also this would be a suggestion, so..