v2020.3.2

• New MonteCarloRattleTransformation and phonopy integration (@utf)
• New structure connectivity features in Chemenv analysis (@davidwaroquiers)
• Bug fixes (@richardtran415, @chc273, @JaGeo, @dskoda, @rkingsbury,
  @jmmshn, @espottesmith, @gVallverdu, @yimingchen95, @fraricci)