This is qpdf version 10.5.0. This release features considerable enhancements to the C API, a few minor fixes, and changes to the documentation. The documentation is now hosted online at https://qpdf.readthedocs.io. The source distribution no longer includes pre-built documentation. You can download that from readthedocs, or you can download the qpdf-10.5.0-docs.zip file from here.