Exception Chaining missing method for suppressing context

Doc/whatsnew/3.3.rst

 ****************************
   What's New In Python 3.3
 ****************************
 
 :Author: Raymond Hettinger
 :Release: |release|
 :Date: |today|
 
 .. Rules for maintenance:
 
@@ skipping 179 matching lines @@
         with open("document.txt") as f:
             content = f.read()
     except FileNotFoundError:
         print("document.txt file is missing")
     except PermissionError:
         print("You are not allowed to read document.txt")
 
 
 PEP 380: Syntax for Delegating to a Subgenerator
 ================================================
+
+:pep:`380` - Syntax for Delegating to a Subgenerator
+ PEP written by Greg Ewing.
 
 PEP 380 adds the ``yield from`` expression, allowing a generator to delegate
 part of its operations to another generator. This allows a section of code
 containing 'yield' to be factored out and placed in another generator.
 Additionally, the subgenerator is allowed to return with a value, and the
 value is made available to the delegating generator.
 While designed primarily for use in delegating to a subgenerator, the ``yield
 from`` expression actually allows delegation to arbitrary subiterators.
 
 (Implementation by Greg Ewing, integrated into 3.3 by Renaud Blanch, Ryan
 Kelly and Nick Coghlan, documentation by Zbigniew Jędrzejewski-Szmek and
 Nick Coghlan)
+
+
+PEP 409: Suppressing exception context
+======================================
+
+:pep:`409` - Suppressing exception context
+ PEP written by Ethan Furman, implemented by Ethan Furman and Nick Coghlan.
+
+
 
 
 PEP 3155: Qualified name for classes and functions
 ==================================================
 
 :pep:`3155` - Qualified name for classes and functions
  PEP written and implemented by Antoine Pitrou.
 
 Functions and class objects have a new ``__qualname__`` attribute representing
 the "path" from the module top-level to their definition.  For global functions
@@ skipping 721 matching lines @@
 ------------
 
 .. Issue #11591: When :program:`python` was started with :option:`-S`,
    ``import site`` will not add site-specific paths to the module search
    paths.  In previous versions, it did.  See changeset for doc changes in
    various files.  Contributed by Carl Meyer with editions by Éric Araujo.
 
 .. Issue #10998: the -Q command-line flag and related artifacts have been
    removed.  Code checking sys.flags.division_warning will need updating.
    Contributed by Éric Araujo.