use pie-documents 0.1.0

from https://github.com/ArneBinder/pie-datasets/pull/209 (and https://github.com/ArneBinder/pie-datasets/pull/211), also see https://github.com/ArneBinder/pie-documents/releases/tag/v0.1.0

requirements.txt

@@ -1,2 +1,2 @@
 pie-datasets>=0.10.11,<0.12.0
-pie-modules>=0.15.9,<0.16.0
+pie-documents>=0.1.0,<0.2.0

tacred.py

@@ -3,9 +3,9 @@ from typing import Any, Dict, Optional
 
 import datasets
 from pie_core import Annotation, AnnotationLayer, annotation_field
-from pie_modules.annotations import BinaryRelation, LabeledSpan
-from pie_modules.document.processing import token_based_document_to_text_based
-from pie_modules.documents import (
+from pie_documents.annotations import BinaryRelation, LabeledSpan
+from pie_documents.document.processing import token_based_document_to_text_based
+from pie_documents.documents import (
     TextDocumentWithLabeledSpansAndBinaryRelations,
     TokenBasedDocument,
 )