Recognize buffer protocol special methods during parsing

Author: brianschubert

mypy/sharedparse.py

@@ -10,6 +10,7 @@
     "__call__",
     "__complex__",
     "__contains__",
+    "__buffer__",
     "__del__",
     "__delattr__",
     "__delitem__",
@@ -31,6 +32,7 @@
     "__new__",
     "__oct__",
     "__pos__",
+    "__release_buffer__",
     "__repr__",
     "__reversed__",
     "__setattr__",