Fix some flake8 errors and cleanup

- Fix some flake8 formatting errors
- Auto-format files edited
- Also ignore some flake8 errors when they are intented
- Update .gitignore to ingore local env

send2trash/exceptions.py

@@ -6,6 +6,7 @@ if PY3:
 else:
     _permission_error = OSError
 
+
 class TrashPermissionError(_permission_error):
     """A permission error specific to a trash directory.
 
@@ -20,6 +21,6 @@ class TrashPermissionError(_permission_error):
     data between partitions, devices, or network drives, so we don't do it as
     a fallback.
     """
+
     def __init__(self, filename):
-        _permission_error.__init__(self, errno.EACCES, "Permission denied",
-                                   filename)
+        _permission_error.__init__(self, errno.EACCES, "Permission denied", filename)