pie-extended implemented but…

[Jean-Baptiste-Camps]

need to account for sentences, that the pie-extended iterator used does not handle, cf.

lemmatise_pie.py

#sentences = [sent for sent in content[wit]]
sentences = [content[wit]] #TODO: fix the getting of sentences

and

or tok_id, token in enumerate(tagger.iter_tag_token(
                    data=doc.read(),
                    iterator=iterator,
                    processor=processor
            )):
```

[PonteIneptique]

Cf 0.0.40 of Pie-Extended as it does now.