Major changes in 0.9.9

flatpak-builder was split out into its own module:
https://github.com/flatpak/flatpak-builder

• When downloading to a temporary directory for later install to the
  system repo we now write to /var/tmp instead of $HOME. This is more
  likely to be the same filesystem as /var/lib/flatpak, and thus will
  not run into issues with e.g. filesystem full.
• We now get the default language list from AccountService if possible.
• A regression that made --devel crash was fixed.
• New feature for flatpakrefs, SuggestRemoteName=remotename will cause
  flatpak to ask if you want to create a generic (not app specific)
  remote for the repo url.
• flatpak build now does not die with the parent by default, you have
  to pass --die-with-parent. This was done because die-with-parent
  uses PR_SET_PDEATHSIG which does not work well if the parent is
  threaded, like e.g. gnome-software is.
• We now always re-set the personality in the sandboxed process
  in order to avoid inheriting weird settings.
• We now share a single dbus proxy instance for all proxies for a sandbox.
• dbus-proxy now properly disallows old-style eavesdropping.
• We now support accessibility by starting a customized dbus proxy for the
  a11y bus.

$ sha256sum flatpak-0.9.9.tar.xz 
aa451388159a0e11f6e2ffe90e1236c37629021c12ede7d0bedb59b0294fe1c3  flatpak-0.9.9.tar.xz