Crash on text file NOT containing us-ascii or utf-8 in first line

[clach04]

Exception back trace:

python elodie.py import --destination=test_deleteme_out elodie/tests/files
/home/pi/pyvenv_numpytest/lib/python3.8/site-packages/requests/__init__.py:89: RequestsDependencyWarning: urllib3 (1.26.13) or chardet (3.0.4) doesn't match a supported version!
  warnings.warn("urllib3 ({}) or chardet ({}) doesn't match a supported "
elodie/tests/files/invalid.jpg is not a valid media file. Skipping...
Traceback (most recent call last):
  File "elodie.py", line 378, in <module>
    main()
  File "/home/pi/pyvenv_numpytest/lib/python3.8/site-packages/click/core.py", line 716, in __call__
    return self.main(*args, **kwargs)
  File "/home/pi/pyvenv_numpytest/lib/python3.8/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/home/pi/pyvenv_numpytest/lib/python3.8/site-packages/click/core.py", line 1060, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/pi/pyvenv_numpytest/lib/python3.8/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/pi/pyvenv_numpytest/lib/python3.8/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "elodie.py", line 140, in _import
    dest_path = import_file(current_file, destination, album_from_folder,
  File "elodie.py", line 67, in import_file
    dest_path = FILESYSTEM.process_file(_file, destination,
  File "/home/pi/code/py/elodie_clach04/elodie/filesystem.py", line 524, in process_file
    metadata = media.get_metadata()
  File "/home/pi/code/py/elodie_clach04/elodie/media/text.py", line 72, in get_metadata
    self.parse_metadata_line()
  File "/home/pi/code/py/elodie_clach04/elodie/media/text.py", line 149, in parse_metadata_line
    first_line = f.readline().strip()
  File "/usr/lib/python3.8/codecs.py", line 322, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x93 in position 54: invalid start byte

with the attached text file cp1252.txt NOTE this is artificially created but matches the characteristics of the real file that caused this.

As per #424 text file reading/writing is not documented but from the code this appears to be deliberate.