Release 1.5.2

• get_supported_imes(self) and def get_current_imes(self) should
  return copies not the lists directly
• Resolves: rhbz#1372660
• Update emojione.json, version from 2016-07-16
• Pull translations from Zanata: Fixes for fr and pl. New: uk
• Changes in itb_emoji.py necessary because of the update of
  the CLDR emoji annotations.
• Update emoji annotations from CLDR (be, bs, cy, eu, gl, zu
  are new, the others updated).
• Shortcut keys which look up related candidates should enable
  the candidate list
• Show ⏳ HOURGLASS WITH FLOWING SAND in the auxiliary text when
  the lookup table is being updated
• Fix bug when committing the preëdit with Space when no
  candidates are available
• Improve the behaviour of the “Tab” key
• Improve the behaviour of the “Escape” key.
• Make mouse clicks in the candidate list behave differently
  depending on the mouse button
• Add hu-rovas-post.mim to hu_HU.conf