Fix some issues reported by lintian

Janitorrequested to merge
(removed):lintian-fixes into master

Fix some issues reported by lintian

  • Trim trailing whitespace.
  • Update standards version to 4.4.1, no changes needed.
  • Bump debhelper from deprecated 7 to 12.
  • Set debhelper-compat version in Build-Depends.

This merge proposal was created automatically by the Janitor bot (https://janitor.debian.net/lintian-fixes).

You can follow up to this merge proposal as you normally would.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/cicero/07fb986c-a7ea-4324-aaea-98717ea86309.

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