core:
 * Faster routines for jpeg decoding
 * Fix reading signatures in encrypted files
 * Add white point correction when lcms is used
 * JBIG2Stream: Fix byte counting
 * Fix potential data loss if we try to fetch a non existing Ref after modifying the document
 * Specifically use DeviceGray instead of DefaultGray for softmasks
 * Fix various issues handling broken files

utils:
 * pdftocairo: Setmode binary for windows
 * pdfsig: Add hability to digitally sign files
 * pdftoppm: add options to set DeviceGray/DeviceRGB/DeviceCMYK
 * pdftops: add options to set DeviceGray/DeviceRGB/DeviceCMYK
 * pdfimages: Account for rotation in PPI calculation

qt5:
 * Add hability to digitally sign files

qt6:
 * Add hability to digitally sign files

build system:
 * Enable clang-tidy bugprone-signed-char-misuse