update to 1.5.0
    
    - If the lookup table shows related words, “Escape” shows the
      original lookup table
    - Use itb_nltk.py to find related words (synonyms, hypernyms, and hyponyms)
    - Add a module to find related words using NLTK
    - Add a feature to find similar emoji
    - Add predictions for emoji (optional, on by default)
    - Add a module to match emoji using Unicode, CLDR, and emojione data
    - Make typing-booster.appdata.xml translatable
    - When ignoring key release events, “False” should be returned, not “True”
    - Resolves: rhbz#1365497
    - Make typing smoother by updating the candidates using GLib.idle_add()
    - Make it possible to enter a space into the preëdit by
      typing “G- ” (AltGr+Space)