Add default values for entity separators

Closes #194 (closed)

tests/test_extract.py

@@ -68,7 +68,7 @@ def test_insert_token(text, offset, length, expected):
 
 
 def test_reconstruct_text_no_end_token_error():
-    arkindex_extractor = ArkindexExtractor()
+    arkindex_extractor = ArkindexExtractor(entity_separators=[])
     arkindex_extractor.tokens = {
         "X": EntityType(start="ⓧ"),
     }