By default, `Path.open()` uses `locale.getencoding()` when opening the
file for reading. This has caused problems when loading files
saved (presumably on Windows) with iso-8859-1 encoding on linux (where
utf-8 is the default), see #112
The default behaviour is maintained with `encoding=None`, and any
valid encoding name can be provided as an argument to load_tabby. The
encoding will be used for loading tsv files.
The encoding is stored as an attribute of `_TabbyLoader` rather than
passed as an input to the load functions - since they may end up being
called in a few places (when sheet import statements are found), it
would be too much passing around otherwise.
With external libraries it might be possible to guess a file encoding
that produces a correct result based on the files content, but the
success is not guaranteed when there are few non-ascii characters in
the entire file (think: list of authors). Here, we do not attempt to
guess, instead expecting the user to know the encoding they need to
use.
Ref:
https://docs.python.org/3/library/pathlib.html#pathlib.Path.openhttps://docs.python.org/3/library/functions.html#open
