Version 1.25 released: GUI resizing and some math functions edit like setting a bit

To size a GUI according to its (window client) size specificied in GUICreate() the function _GUIResize() can be used by giving an absolute or delta (relative) size.

_IsBit() can be used for testing a bit and _BitSet() for setting or unsetting a bit. And _Decimals() returns the decimal part (after the point) of a number.