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• Add Container::extendContainerValidity for adding archive timestamps to eligible ASiC-E and ASiC-S/TST containers, or wrapping a container in timestamped ASiC-S when in-place extension is unavailable (#658)
• Update libraries and platform support (#722, #726, #749)
• Improve signature and container compatibility (#615, #728, #729, #730, #735, #751, #752, #754, #756)
• Harden XML, ZIP, network, and file handling (#731, #732, #734, #736, #738, #743)
• Other fixes, optimizations, and documentation updates (#727, #733, #753, #755, #757) Full Changelog: https://github.com/open-eid/libdigidocpp/compare/v4.4.0...v4.5.0