pyproject.toml edits

pyproject.toml

@@ -15,7 +15,7 @@ readme = "README.md"
 repository = "https://github.com/BookOps-CAT/bookops-worldcat"
 homepage = "https://bookops-cat.github.io/bookops-worldcat/"
 
-keywords = ["api", "api-wrapper", "oclc", "worldcat", "cataloging", "bibliographic records", "marcxml", "holdings", "library metadata"]
+keywords = ["api", "api-wrapper", "oclc", "worldcat", "cataloging", "bibliographic records", "marcxml", "holdings", "library metadata", "marc21"]
 
 classifiers = [
     "Development Status :: 5 - Production/Stable",
@@ -60,7 +60,6 @@ markers = [
 	"webtest: mark a test hitting live endpoints",
 	"holdings: mark holdings live endpoint tests",
 	"http_code: use to pass returned http code to 'mock_session_response' fixture that mocks 'requests.Session.send' method",
-
 ]
 
 [tool.coverage.run]