Release v1.20.0

• Added: audeer.md5() to calculate MD5 checksum
  of a file or folder
• Added: short argument to audeer.is_uid().
  If True it checks for a short UID
  like ad855840
• Added: examples to the API documentation of
  audeer.create_archive(),
  audeer.extract_archive(),
  audeer.extract_archives()
• Changed: audeer.list_file_names()
  raises a NotADirectoryError
  if the provided path argument
  is a non-existing folder
  or a folder that is part
  of a search pattern
  that does not exists
• Changed: audeer.create_archive()
  supports now None as files argument,
  which will automatically include all files under root
• Changed: audeer.create_archive()
  now raises a FileNotFoundError
  if root or a file in files cannot be found,
  NotADirectoryError
  if root is not a directory,
  RuntimeError
  if a file in files
  is not located below root
• Changed: audeer.extract_archive()
  and audeer.extract_archives()
  now raise a FileNotFoundError
  if an archive cannot be found,
  IsADirectoryError
  if an archive is a directory,
  NotADirectoryError
  if destination is not a directory
• Fixed: audeer.replace_file_extension()
  now adds the new file extension to the filename
  if no original file extension was present
  instead of replacing the filename
• Fixed: audeer.replace_file_extension()
  now returns the original filename
  when an empty new file extension is provided
  instead of adding '.' at the end of the filename
• Fixed: add raises section
  to API documentation of audeer.list_file_names()
• Fixed: add raises section
  to API documentation of audeer.StrictVersion