silence some mypy errors

Author: willmcgugan

fs/__init__.py

@@ -1,7 +1,7 @@
 """Python filesystem abstraction layer.
 """
 
-__import__("pkg_resources").declare_namespace(__name__)
+__import__("pkg_resources").declare_namespace(__name__)  # type: ignore
 
 from ._version import __version__
 from .enums import ResourceType, Seek

fs/opener/__init__.py

@@ -3,7 +3,7 @@
 """
 
 # Declare fs.opener as a namespace package
-__import__("pkg_resources").declare_namespace(__name__)
+__import__("pkg_resources").declare_namespace(__name__)  # type: ignore
 
 # Import objects into fs.opener namespace
 from .base import Opener

fs/tarfs.py

@@ -112,7 +112,7 @@ class TarFS(WrapFS):
         "gz": (".tar.gz", ".tgz"),
     }
 
-    def __new__(
+    def __new__(  # type: ignore
         cls,
         file,  # type: Union[Text, BinaryIO]
         write=False,  # type: bool

fs/zipfs.py

@@ -163,7 +163,8 @@ class ZipFS(WrapFS):
 
     """
 
-    def __new__(
+    # TODO: __new__ returning different types may be too 'magical'
+    def __new__(  # type: ignore
         cls,
         file,  # type: Union[Text, BinaryIO]
         write=False,  # type: bool