Change logs for pdf.js source package in Bionic

pdf.js (1.5.188+dfsg-1) unstable; urgency=medium

  [ Yury Delendik ]
  * Version 1.5

  [ David Prévot ]
  * Revert "Track 1.3 for the time being"
  * Drop ownCloud-specific bits, and upload to unstable
  * Update Standards-Version to 3.9.8
  * Update copyright

 -- David Prévot <email address hidden>  Mon, 20 Jun 2016 16:13:29 -0400