• Pull translations form Zanata (de, pl, and uk updated because of
  the new “About” tab)
• If “☑ Enable suggestions by Tab key” option is on, any preëdit
  change should hide the lookup table
• Make showing of similar emoji work even if emoji preditions are off
• Display whether emoji predictions are turned on in the auxiliary string
• Add key and mouse bindings to toggle the emoji predictions
  (AltGr+F6 and Control+Mouse3 anywhere in the candidate list)
• Add AltGr+F10 key binding to open the setup tool
• Allow any amount of white space and '_' characters to seperate words
  in an emoji query string
• Add an “About” tab to the setup tool and put links to home page and
  online documentation there.
• Update README with latest key binding and mouse binding documentation