• improve GD2 tests (GH #42, RT #140856)
  
• also list the unsupported image formats in the GD::Image pod
  
• fix copyRotated pod (it rotates CCW) PR #36 by LorenzoTo
  
• fix GD::Simple->fontMetrics docs and implementation GH #37 by Ben Crowell.
  fix lineheight calculation according to the docs. You might need to
  fix your code!
  
• add image methods tiff, webp, heif, avif, and its documentation.
  
• fix the fix for the poly->transform documentation RT #140043