Change logs for gbdfed source package in Bionic

gbdfed (1.6-4) unstable; urgency=medium

  * Drop custom debian/rules.
  * Use debhelper 10.
  * Standards-Version 3.9.6.
  * Update debian/copyright:
    - mention copyrights/license for hbf.*
    - use copyright-format 1.0
    - switch Debian packaging to Expat license (with custom debian/rules
      dropped, there's not much to be copyrightable anyway).

 -- Andrew Shadura <email address hidden>  Thu, 13 Oct 2016 13:22:44 +0200