update to 1.5.25
    
    - on Fedora 26, save some space in the binary rpm by requiring the
      Fedora packages which contain the emoji data files
    - Update translations from zanata (de, pl, uk updated)
    - Show the categories as well on right mouse click in emoji-picker
    - Improve information displayed on right mouse click in emoji-picker
    - html.unescape() the strings parsed from the cldr annotations
    - Fix fontsize change for invisible emoji in browse flowbox
    - Add an option whether the arrow keys are allowed to reopen a preëdit
    - Add an option to work around the broken forward_key_event()
      in the Qt 4/5 im module
    - Use xdg.BaseDirectory to add a USER_DATADIR to the
      search path for data for itb_emoji.py
    - emoji_picker.py: Speedup: Fix wrong indentation of block
      in _fill_flowbox_browse()
    - emoji_picker.py: Print some profiling information when debugging is enabled
    - Store the clipboard with gtk_clipboard_store() to keep it around
      after emoji-picker quits
    - emoji-picker: Do not override the decoration layout of the header bar
    - When an emoji with a different skin tone is selected,
      replace the original emoji immediately
    - Make emoji-picker work on dark themes like Adwaita-dark as well