Code clean-ups in pkg_digger.conf
pkg_cmp_summary: option -f was added, -p and -P -- deprecated
sync regression tests with pkgsrc
Version -> 0.64.0

  pkg_subgraph_deps:
    - significant performance improvements

  pkg_cmp_summary:
    - option -f was added, options -p and -P are considered deprecated

  Code clean-ups in the default pkg_digger.conf