0.4.0

Merged pull requests:

• Add black code formatter #32 (MartinHjelmare)
• Fix release script #31 (MartinHjelmare)
• Fix message parsing #30 (MartinHjelmare)
• Add Python 3.8 tox and travis env #29 (MartinHjelmare)
• Scheduled monthly dependency update for November #28 (pyup-bot)
• Fix docs build #27 (MartinHjelmare)
• Add readme docs badge #26 (MartinHjelmare)
• Fix readme badges and links #25 (MartinHjelmare)
• Scheduled monthly dependency update for October #24 (pyup-bot)
• Add readthedocs config yml file #23 (MartinHjelmare)
• Remove mock dependency #22 (MartinHjelmare)
• Drop support of Python 2.7 #21 (MartinHjelmare)
• Scheduled monthly dependency update for September #20 (pyup-bot)
• Add .pyup.yml #19 (MartinHjelmare)