For me, window snapping is incredibly annoying.
For FC 20 with the Xfce spin, there a couple of knobs to turn before it can be turned off completely:
Applications Menu/Settings/Window Manager:
Go to the Advanced tab and uncheck ‘Snap windows to screen border’ and ‘Snap windows to other windows’
Applications Menu/Settings/Window Manager Tweaks:
Go to Accessibility tabUncheck the ‘Use edge resistance instead of window snapping’