Using the Accessibility API for arranging the active app's window (not for Finder Windows or "Arrange Windows"), this means much faster arranging than before.
Added Window Snapping: Drag and drop a window to a Screen Edge to resize and position it.
New Preferences Tab: Metrics
Settings for widths/heights of the Snapping Zones
Setting to activate/deactivate the Window Snapping
Setting to switch between fullsize a window or to center it with Top Snapping
New Menubar Icon