OpenSystemsDevelopment / qpdf

QPDFObjectHandle gets copied a lot, so let's not add another field.
For performance reasons, QPDFObjectHandle does not indirect through a
smart pointer, so this would also be an ABI change.

The agogo theme doesn't do very well on narrow screens. The code
blocks were used for shell commands but were using Python syntax
highlighting.

Since the introduction of fuzz testing, there has never been a problem
found because of a failure of a file in the fuzzer seed corpus. As the
fuzzer has found problems, they have been added to the test suite, and
that should be adequate to exercise the fuzzers in the tesing
environment as well as providing adequate regression testing.

Removing these original files shaves many minutes off the builds in CI.

I run the fuzzer test suite, which should be good enough to avoid
wasting resources on this every time I push to build.