Remove old [DEV], add new [TESTING]

Rewrite to use openCV library and Canny edge detection instead of older
colour distance algorithm.
Current state implements all basic functions (renaming, resizing,
cropping) but there are no fall backs or error handling.
Remove old files and add freshly compiled source
Add icon to executable

Add source for icon to comments in source file
Update readme for TestingCannyEdge
Fix errors in readme
Fix errors in readme
Update executable to UPX compression

File size changed from ~41Mb to ~28Mb
Add input error handling + keep console open on completion
Change acceptable length range for film contour
Add fall back crop

This crops to a fixed position. Y coordinates should be pretty good
because of how the camera is fixed. X coordinates crop to a wider than
necessary area to cope with camera movement on that axis.
Update executable with fallback additions
Improve selection of film contour
Change method of identifying film contour

Use contour area, not dimensions
Update executable to match 519226b
Merge TestingCannyEdge