Add SupportsBytes and SupportsComplex.  Fixes #68.
diff --git a/pep-0484.txt b/pep-0484.txt
index 6663b51..ec64d41 100644
--- a/pep-0484.txt
+++ b/pep-0484.txt
@@ -1065,12 +1065,16 @@
 
 * SupportsAbs, to test for ``__abs__``
 
+* SupportsComplex, to test for ``__complex__``
+
 * SupportsFloat, to test for ``__float__``
 
 * SupportsInt, to test for ``__int__``
 
 * SupportsRound, to test for ``__round__``
 
+* SupportsBytes, to test for ``__bytes__``
+
 The library includes literals for platform-specific type hinting:
 
 * PY2