Bug fix release 25-May-20182

[jsachs]

I have posted a new release (25-May-2018) in full installer and executable-only versions. No changes to help file.

The changes (taken from the update log) are:

Fixed errors when recalculating the halftone transformation with custom screen selected.

Clone tool: Unused input images are no longer added to input list. Also fixed several bugs causing clone results not to be restored correctly when double-clicking on a clone thumbnail in the image browser. Problems affected cloning from an input image whose size was different from the input image.

Note: Unfortunately, these changes will invalidate any previously save scripts that include cloning.