Why older verions are not always available
The only reason I've had requests for an older version is to use the older renaming option interface. The new versions, up to version 2.9.5, still includes the option to use the old interface by clicking on the "Toggle Script View" button on the lower left of the program.
The new Scripting View will convert the old files into the new Scripting View for those that want to try using the new interface without losing older scripts.