Announce: Flatpak 1.8.3

[Alexander Larsson]

Available at: 

  https://github.com/flatpak/flatpak/releases/tag/1.8.3

$ sha256sum flatpak-1.8.3.tar.xz
33667fdd5cf65914209488bf3e7e574ddb57667bb7939863b4fcb40ca8b66edd  flatpak-1.8.3.tar.xz

Changes:

  * Fixed progress reporting for OCI and extra-data
  * The in-memory summary cache is more efficient
  * Fixed authentication getting stuck in a loop in some cases
  * Fixed authentication error reporting
  * We now extract OCI info for runtimes as well as apps
  * Fixed crash if anonymous authentication fails and -y is specified
  * flatpak info now only looks at the specified installation
    if one is specified
  * Better error reporting for server HTTP errors during download
  * Uninstall now removes applications before the runtime it depends on
  * Fixed test-suite to pass with the latest OSTree version
  * Fixed dbus environment variables in flatpak enter
  * Avoid updating metadata from the remote when uninstalling
  * Fixed error message handling in various places
  * FlatpakTransaction now verifies all passed in refs to avoid
    potential issues with invalid names
  * Updated translations