Version 0.4.1

• Better SQL-aware wildcard handling: util.make_wildcard_list
• Drop testing on Python 3.6, add 3.9 and 3.10
• Drop AppVeyor for testing on Windows, use GitHub Actions instead
• The unimplemented stime keyword in pisces.request.get_stations has been replaced
  with time_span, which accepts time ranges as YYYYddd julian dates.
• Fixed typo in pisces.request.get_stations implementation of nets keyword.
• New handling of wildcards in pisces.request.get_stations
• Fixed typo in pisces.request.get_stations implementation of channels keyword.
• Fixed typo in pisces.requests.wfdisc_rows_to_stream 😳 Yikes!
• New contributor Samuel Chodur!
• Use GitHub Actions for wheels and releases to PyPI
• Add asquery option to pisces.request.get_waveforms