Log Message:
graphics/stitchy: update to 0.1.5

0.1.5 (April 29, 2023)
 - Moved much of the inner workings to the new stitchy-core crate, which is
   now a dependency
 - Completely changed the flags used for controlling selection of source files
   in the current directory
 - Added input/output file sizes and ratio to console output
 - Fix: saving as non-JPEG when defaults specify JPEG with quality no longer
   fails
 - Unit testing: several tests confirming expected output dimensions given
   input dimensions