S_Merge history of upgrades.

New to Version 1.3

Introduced an option of overlaying dotted and/or solid grid patterns on the image.
Able to abort lengthy processing by pressing the space bar.
Cursor x,y position display in the status bar now is referenced from bottom-left.
In edit menu: copying scale/width/height of one source to the other will remove the positional offset between them.
Fixed the bug where shrinking the height of the align window to nothing caused a divide-by-zero crash.

New to Version 1.2

Introduction of Cylindrical projection distortion (panoramic view).
Modified merge and brightness/contrast controls to use slider bars.
Removed the bug where deleting a source image with one or more target dialog boxes opened caused a crash.
Removed the bug where file save was still possible with one or both source images deleted.

New to Version 1.1

Introduction of pixel anti-aliasing software when rotating and scaling the image.
New snap to grid of 1, 5,10, and 16 pixels when setting crop zone rectangle.
Now able to copy height, width or both from one source image to another in the Align window.