1.3.8.
    
      - Avoid AttributeError in on_btnNPApply_clicked() (bug #772112).
      - Added debugging when jobviewer not found (bug #757520).
      - Applied patch from Till Kamppeter to use pycurl 'https' support
        for openprinting (CVE-2011-4405).
      - Always use a sequence as args for timedops.TimedSubprocess()
        (patch from Vincent Untz).
      - Added some firewall debugging for bug #755913.
      - Fixed typo (Ubuntu #844976).
      - Run probe_printer.py with an argument to run PrinterFinder by hand.
      - More debugging output in PrinterFinder.
      - Really fix SMB probing in PrinterFinder.
      - LpdServer class: spot when we can't connect, and give up (likewise
        in PrinterFinder).
      - Ignore ' All-in-one' suffix for printer model names when comparing
        them (bug #751610).
      - Handle HTTP errors from openprinting.org (seen in bug #743446).
      - Don't re-open PPD when already available, just to localize marker
        names.
      - Use the monitor's PPD cache in the properties dialog.
      - monitor: provide method for sharing the monitor's PPD cache.
      - cupshelpers: avoid re-opening PPD when not needed (not a leak).
      - Fixed file descriptor leak in PPDCache (Ubuntu #874445).
      - Fixed typo in check-device-ids.py when looking for ID-less
        matches.
      - Require newer pycups; drop compatibility code.
      - Do not connect to CUPS with an empty user name.
      - On asynchronous IPP connections make sure that the password dialog
        is repeated if a wrong password is entered (Ubuntu #653132).
      - Several fixes on credential caching for IPP authentication (Ubuntu
        bug 653132).
      - Don't penalise pxlmono now that bug #661814 is fixed in
        ghostscript-9.04.
      - Handle new CUPS 1.5 IPP error response IPP_AUTHENTICATION_CANCELED
        (Ubuntu #653132).