To the best of my knowledge, all packages are compliant with the latest
version of Debian policy (v4.1.1), but I did not check them one-by-one.

Apply change to 905 packages, using:

  $ dht mass-change "Declare compliance with Debian policy 4.1.1" \
      'sed -i -e "s/^Standards-Version:.*/Standards-Version: 4.1.1/" debian/control' p/*

Apply change to 912 packages, using:

  $ dht mass-change "Modify d/watch and Source field in d/copyright to use HTTPS" \
      'sed -i -e "s,http://,https://," debian/watch && sed -i -e "s,Source: http://,Source: https://," debian/copyright' p/*

Apply change to 913 packages, using:

  $ dht mass-change "Use the HTTPS form of the copyright-format URL" \
      'sed -i -e "s,Format: http://,Format: https://," debian/copyright' p/*

Since Debian Policy version 4.0.1, priority extra has been deprecated.

Apply change to 876 packages, using:

  $ dht mass-change "Change Priority to optional. Since Debian Policy
version 4.0.1, priority extra has been deprecated." 'sed -i -e
"s/Priority: extra/Priority: optional/" debian/control' p/*