I have released qpdf 5.1.0. The main functional change here is the
ability to provide your own source of random numbers at runtime if
you want to avoid both the OS-provided secure random numbers (used
by default since 5.0.1) and the older stdlib random numbers. This
release also features a number of small fixes for newer versions of
several compilers and to handle one more type of damage to a PDF
file. For details, please see the release notes in the
documentation or the ChangeLog.