v0.3.40

• merged #22 & fixed #23 (thank you)
• change CoquiEngine cloning_reference_wav parameter to "voice"
• added coqui predefined speaker voices
  Submit name or parts of the name as voice (case-insensitive):

  engine = CoquiEngine(voice="aaron")

  RealtimeTTS will first look for wav or json files, then for the predefined speaker voices