Move String into utils.

Author: domdfcoding

domdf_python_tools/stringlist.py

@@ -27,23 +27,13 @@
 from contextlib import contextmanager
 from typing import Any, Iterable, Iterator, List, Tuple, Union, cast, overload
 
-# 3rd party
-from typing_extensions import Protocol, runtime_checkable
-
 # this package
-from domdf_python_tools.utils import convert_indents
-
-__all__ = ["String", "Indent", "StringList"]
+from domdf_python_tools.utils import String, convert_indents
 
+# Will be removed in 1.0
+String = String
 
-@runtime_checkable
-class String(Protocol):
-	"""
-	Protocol for classes that implement ``__str__``.
-	"""
-
-	def __str__(self) -> str:
-		...  # pragma: no cover
+__all__ = ["Indent", "StringList"]
 
 
 class Indent:

domdf_python_tools/utils.py

@@ -92,6 +92,7 @@
 		"etc",
 		"head",
 		"HasHead",
+		"String",
 		]
 
 #: The current major python version.