Update to 2.12.0
    
    - Use the dead keys added recently to ibus as soon as they become available
      by an ibus update
      (see: https://github.com/ibus/ibus/commit/3e2609e68c9107ce7c65e2d5876bfdc9f0f8c854)
    - Make Compose preedit less intrusive, show compose key only in
      the middle of the sequence or when it is the only key so far
    - Use · U+00B7 MIDDLE DOT instead of ⎄ U+2384 COMPOSITION SYMBOL to display
      Multi_key in pre-edit.
    - Add an option to play a sound on error (for example invalid compose sequence)
    - Don’t include the system compose files unconditionally if a user compose file exists
      (Resolves: https://github.com/mike-fabian/ibus-typing-booster/issues/170)
    - Add option to choose whether to start up in direct input mode
      (Resolves: https://github.com/mike-fabian/ibus-typing-booster/issues/169)
    - Change default input methods for Indian locales to inscript2