Redshift 1.10

• Fix #80: Add Geoclue2 location provider.
• Add CoreLocation (OSX) location provider and Quartz (OSX) gamma
  adjustment method.
• Add hooks for user actions on period switch.
• Be less verbose when color values/period did not change.
• Add config setting to set gamma separately for day/night.
• Add support for custom transition start and end elevation (Mattias
  Andrée).
• redshift-gtk: Show errors from child process in a dialog.
• Fix #95: Add AppData file for package managers.
• Use gettimeofday if POSIX timers not available (add support for
  OSX).
• Fix #41: Do not jump to 0 % or 100 % when changing direction of
  transition (Mattias Andrée).
• redshift-gtk: Relay USR1 signal to redshift process.
• redshift-gtk: Notify desktop about startup completion.
• Fix: systemd unit files were built from the wrong source.
• Fix #90: Print N/S and E/W in the location (Mattias Andrée).
• Fix #112: redshift-gtk: Do not buffer lines from child indefinitely.
• Fix #105: Limit decimals in displayed location to two.
• Update dependencies listed in HACKING.md (emilf, Kees Hink).
• Fix: Make desktop file translatable.
• Add Travis CI build script.