Fix ResourceFile.__enter__ not returning anything

README.rst

@@ -189,6 +189,7 @@ Version 1.3.1 (next version)
   * The ``'dcmp'`` ID used to decompress each resource is displayed.
 
 * Fixed an incorrect ``options.packages`` in ``setup.cfg``, which made the library unusable except when installing from source using ``--editable``.
+* Fixed ``ResourceFile.__enter__`` returning ``None``, which made it impossible to use ``ResourceFile`` properly in a ``with`` statement.
 
 Version 1.3.0.post1
 ^^^^^^^^^^^^^^^^^^^

rsrcfork/api.py

@@ -455,7 +455,7 @@ class ResourceFile(collections.abc.Mapping):
 			self._stream.close()
 	
 	def __enter__(self):
-		pass
+		return self
 	
 	def __exit__(self, exc_type, exc_val, exc_tb):
 		self.close()