Deprecated outputs

[shnizzedy]

Idea:

• We add
  • a "Deprecated" column to cpac_outputs.tsv
    and
  • an "include_deprecated_outputs" option to the config and/or commandline flags
• When we change or deprecate an output, we keep the old outputs for one release cycle, so we can run with "include_deprecated_outputs" and don't have to worry about mapping the new outputs to the old when regression test against the previous version.

The values in the "Deprecated" column could be boolean or could be the version in which the outputs were deprecated. The latter would probably be easier to clear out the old outputs for the subsequent release.