• added samples/gifscale.pl, which adjusts the screen size/position tags when scaling an animated gif

Bug fixes:

• correct handling of sz in matrix_transform() - this should allow perspective type transformations to work now.
• prevent a cast to integer warning on x64 builds in datatypes.c also fixed some other type warnings
• some sub-directory tests depended on files produced by the parent directory tests
• Imager::Font::Wrap doesn't correctly set savepos thanks to Nikita Dedik and Eleneldil G. Arilou for reporting this.
• test 171 in t/t01introvert.t was failing on perls configured to use long double.
• the code for the transform2() uminus operator was missing a break. Added tests for better code coverage of the ops.
• the SGI RLE compression code could overflow its compression buffer
• the 32-bit output function used by the SGI code only handled values under 0x10000. This was most noticable when writing large RLE images.
• validate chan_count for chans == NULL for each of the i_gsamp() implementations.
• attempt to work around the test failure here
• improve the error messages produced when attempting to read or write an unknown image file format.
• improve the transform2() documentation
• correctly generate the author key in META.yml
• correctly blend a rotated (or matrix_transformed()) image when performing interpolation in the presence of an alpha channel. Also corrected the centring of the rotated image on the output image.