function min(a, b, dst) {
  dst = dst || new VecType(3);
  dst[0] = Math.min(a[0], b[0]);
  dst[1] = Math.min(a[1], b[1]);
  dst[2] = Math.min(a[2], b[2]);
  return dst;
}
Return min values of two vectors.
Given vectors a and b returns
[min(a[0], b[0]), min(a[1], b[1]), min(a[2], b[2])].
@param {module:twgl/v3.Vec3} a Operand vector.
@param {module:twgl/v3.Vec3} b Operand vector.
@param {module:twgl/v3.Vec3} [dst] vector to hold result. If not new one is created.
@return {module:twgl/v3.Vec3} The min components vector.
@memberOf module:twgl/v3