  
  Requests and Responses
  ~~~~~~~~~~~~~~~~~~~~~~
  
  * ...
  
  Serialization
  ~~~~~~~~~~~~~
  
  * You can now deserialize data using natural keys containing :ref:`forward
 
</s> remove     DictWrapper, ImmutableList, MultiValueDict, MultiValueDictKeyError,
    OrderedSet,
 </s> add     CaseInsensitiveMapping, DictWrapper, ImmutableList, MultiValueDict,
    MultiValueDictKeyError, OrderedSet, </s> remove from django.http.request import split_domain_port
 </s> add from django.http.request import HttpHeaders, split_domain_port </s> remove from django.utils.datastructures import ImmutableList, MultiValueDict
 </s> add from django.utils.datastructures import (
    CaseInsensitiveMapping, ImmutableList, MultiValueDict,
)
* Added :attr:`.HttpRequest.headers` to allow simple access to a request's
  headers.
  
  Requests and Responses
  ~~~~~~~~~~~~~~~~~~~~~~
  
* Added :attr:`.HttpRequest.headers` to allow simple access to a request's
  headers.
  
  Serialization
  ~~~~~~~~~~~~~
  
  * You can now deserialize data using natural keys containing :ref:`forward
keep keep keep keep replace keep keep keep keep keep
 Fixed #20147 -- Added HttpRequest.headers. 
docs/releases/2.2.txt