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1.1 (2011-07-22)
================

Features
--------

- Added the ``pyramid.renderers.null_renderer`` object as an API. The null
  renderer is an object that can be used in advanced integration cases as
  input to the view configuration ``renderer=`` argument. When the null
  renderer is used as a view renderer argument, Pyramid avoids converting the
  view callable result into a Response object. This is useful if you want to
  reuse the view configuration and lookup machinery outside the context of
  its use by the Pyramid router. This feature was added for consumption by
  the ``pyramid_rpc`` package, which uses view configuration and lookup
  outside the context of a router in exactly this way. ``pyramid_rpc`` has
  been broken under 1.1 since 1.1b1; adding it allows us to make it work
  again.

- Change all scaffolding templates that point to docs.pylonsproject.org to
  use ``/projects/pyramid/current`` rather than ``/projects/pyramid/dev``.

Internals
---------

- Remove ``compat`` code that served only the purpose of providing backwards
  compatibility with Python 2.4.

- Add a deprecation warning for non-API function
  ``pyramid.renderers.renderer_from_name`` which has seen use in the wild.

- Add a ``clone`` method to ``pyramid.renderers.RendererHelper`` for use by
  the ``pyramid.view.view_config`` decorator.

Documentation
-------------

- Fixed two typos in wiki2 (SQLA + URL Dispatch) tutorial.

- Reordered chapters in narrative section for better new user friendliness.

- Added more indexing markers to sections in documentation.

1.1b4 (2011-07-18)
==================

Documentation
-------------

- Added a section entitled "Writing a Script" to the "Command-Line Pyramid"
  chapter.

Backwards Incompatibilities
---------------------------

- We added the ``pyramid.scripting.make_request`` API too hastily in 1.1b3.
  It has been removed. Sorry for any inconvenience. Use the
  ``pyramid.request.Request.blank`` API instead.

Features
--------

- The ``paster pshell``, ``paster pviews``, and ``paster proutes`` commands
  each now under the hood uses ``pyramid.paster.bootstrap``, which makes it
  possible to supply an ``.ini`` file without naming the "right" section in
  the file that points at the actual Pyramid application. Instead, you can
  generally just run ``paster {pshell|proutes|pviews} development.ini`` and
  it will do mostly the right thing.

Bug Fixes
---------

- Omit custom environ variables when rendering a custom exception template in
  ``pyramid.httpexceptions.WSGIHTTPException._set_default_attrs``;
  stringifying thse may trigger code that should not be executed; see
  https://github.com/Pylons/pyramid/issues/239

1.1b3 (2011-07-15)
==================

Features
--------

- Fix corner case to ease semifunctional testing of views: create a new
  rendererinfo to clear out old registry on a rescan. See
  https://github.com/Pylons/pyramid/pull/234.

- New API class: ``pyramid.static.static_view``. This supersedes the
  deprecated ``pyramid.view.static`` class. ``pyramid.static.static_view``
  by default serves up documents as the result of the request's
  ``path_info``, attribute rather than it's ``subpath`` attribute (the
  inverse was true of ``pyramid.view.static``, and still is).
  ``pyramid.static.static_view`` exposes a ``use_subpath`` flag for use when
  you want the static view to behave like the older deprecated version.

- A new API function ``pyramid.paster.bootstrap`` has been added to make
  writing scripts that bootstrap a Pyramid environment easier, e.g.::

      from pyramid.paster import bootstrap
      info = bootstrap('/path/to/my/development.ini')
      request = info['request']
      print request.route_url('myroute')

- A new API function ``pyramid.scripting.prepare`` has been added. It is a
  lower-level analogue of ``pyramid.paster.boostrap`` that accepts a request
  and a registry instead of a config file argument, and is used for the same
  purpose::

      from pyramid.scripting import prepare
      info = prepare(registry=myregistry)
      request = info['request']
      print request.route_url('myroute')

- A new API function ``pyramid.scripting.make_request`` has been added. The
  resulting request will have a ``registry`` attribute. It is meant to be
  used in conjunction with ``pyramid.scripting.prepare`` and/or
  ``pyramid.paster.bootstrap`` (both of which accept a request as an
  argument)::

      from pyramid.scripting import make_request
      request = make_request('/')

- New API attribute ``pyramid.config.global_registries`` is an iterable
  object that contains references to every Pyramid registry loaded into the
  current process via ``pyramid.config.Configurator.make_app``. It also has
  a ``last`` attribute containing the last registry loaded. This is used by
  the scripting machinery, and is available for introspection.

Deprecations
------------

- The ``pyramid.view.static`` class has been deprecated in favor of the newer
  ``pyramid.static.static_view`` class. A deprecation warning is raised when
  it is used. You should replace it with a reference to
  ``pyramid.static.static_view`` with the ``use_subpath=True`` argument.

Bug Fixes
---------

- Without a mo-file loaded for the combination of domain/locale,
  ``pyramid.i18n.Localizer.pluralize`` run using that domain/locale
  combination raised an inscrutable "translations object has no attr
  'plural'" error. Now, instead it "works" (it uses a germanic pluralization
  by default). It's nonsensical to try to pluralize something without
  translations for that locale/domain available, but this behavior matches
  the behavior of ``pyramid.i18n.Localizer.translate`` so it's at least
  consistent; see https://github.com/Pylons/pyramid/issues/235.

1.1b2 (2011-07-13)
==================

Features
--------

- New environment setting ``PYRAMID_PREVENT_HTTP_CACHE`` and new
  configuration file value ``prevent_http_cache``. These are synomymous and
  allow you to prevent HTTP cache headers from being set by Pyramid's
  ``http_cache`` machinery globally in a process. see the "Influencing HTTP
  Caching" section of the "View Configuration" narrative chapter and the
  detailed documentation for this setting in the "Environment Variables and
  Configuration Settings" narrative chapter.

Behavior Changes
----------------

- Previously, If a ``BeforeRender`` event subscriber added a value via the
  ``__setitem__`` or ``update`` methods of the event object with a key that
  already existed in the renderer globals dictionary, a ``KeyError`` was
  raised. With the deprecation of the "add_renderer_globals" feature of the
  configurator, there was no way to override an existing value in the
  renderer globals dictionary that already existed. Now, the event object
  will overwrite an older value that is already in the globals dictionary
  when its ``__setitem__`` or ``update`` is called (as well as the new
  ``setdefault`` method), just like a plain old dictionary. As a result, for
  maximum interoperability with other third-party subscribers, if you write
  an event subscriber meant to be used as a BeforeRender subscriber, your
  subscriber code will now need to (using ``.get`` or ``__contains__`` of the
  event object) ensure no value already exists in the renderer globals
  dictionary before setting an overriding value.

Bug Fixes
---------

- The ``Configurator.add_route`` method allowed two routes with the same
  route to be added without an intermediate ``config.commit()``. If you now
  receive a ``ConfigurationError`` at startup time that appears to be
  ``add_route`` related, you'll need to either a) ensure that all of your
  route names are unique or b) call ``config.commit()`` before adding a
  second route with the name of a previously added name or c) use a
  Configurator that works in ``autocommit`` mode.

- The ``pyramid_routesalchemy`` and ``pyramid_alchemy`` scaffolds
  inappropriately used ``DBSession.rollback()`` instead of
  ``transaction.abort()`` in one place.

- We now clear ``request.response`` before we invoke an exception view; an
  exception view will be working with a request.response that has not been
  touched by any code prior to the exception.

- Views associated with routes with spaces in the route name may not have
  been looked up correctly when using Pyramid with ``zope.interface`` 3.6.4
  and better. See https://github.com/Pylons/pyramid/issues/232.

Documentation
-------------

- Wiki2 (SQLAlchemy + URL Dispatch) tutorial ``models.initialize_sql`` didn't
  match the ``pyramid_routesalchemy`` scaffold function of the same name; it
  didn't get synchronized when it was changed in the scaffold.

- New documentation section in View Configuration narrative chapter:
  "Influencing HTTP Caching".

1.1b1 (2011-07-10)
==================

Features
--------

- It is now possible to invoke ``paster pshell`` even if the paste ini file
  section name pointed to in its argument is not actually a Pyramid WSGI
  application. The shell will work in a degraded mode, and will warn the
  user. See "The Interactive Shell" in the "Creating a Pyramid Project"
  narrative documentation section.

- ``paster pshell`` now offers more built-in global variables by default
  (including ``app`` and ``settings``). See "The Interactive Shell" in the
  "Creating a Pyramid Project" narrative documentation section.

- It is now possible to add a ``[pshell]`` section to your application's .ini
  configuration file, which influences the global names available to a pshell
  session. See "Extending the Shell" in the "Creating a Pyramid Project"
  narrative documentation chapter.

- The ``config.scan`` method has grown a ``**kw`` argument. ``kw`` argument
  represents a set of keyword arguments to pass to the Venusian ``Scanner``
  object created by Pyramid. (See the Venusian documentation for more
  information about ``Scanner``).

- New request property: ``json_body``. This property will return the
  JSON-decoded variant of the request body. If the request body is not
  well-formed JSON, this property will raise an exception.

- A new value ``http_cache`` can be used as a view configuration
  parameter.

  When you supply an ``http_cache`` value to a view configuration, the
  ``Expires`` and ``Cache-Control`` headers of a response generated by the
  associated view callable are modified. The value for ``http_cache`` may be
  one of the following:

  - A nonzero integer. If it's a nonzero integer, it's treated as a number
    of seconds. This number of seconds will be used to compute the
    ``Expires`` header and the ``Cache-Control: max-age`` parameter of
    responses to requests which call this view. For example:
    ``http_cache=3600`` instructs the requesting browser to 'cache this
    response for an hour, please'.

  - A ``datetime.timedelta`` instance. If it's a ``datetime.timedelta``
    instance, it will be converted into a number of seconds, and that number
    of seconds will be used to compute the ``Expires`` header and the
    ``Cache-Control: max-age`` parameter of responses to requests which call
    this view. For example: ``http_cache=datetime.timedelta(days=1)``
    instructs the requesting browser to 'cache this response for a day,
    please'.

  - Zero (``0``). If the value is zero, the ``Cache-Control`` and
    ``Expires`` headers present in all responses from this view will be
    composed such that client browser cache (and any intermediate caches) are
    instructed to never cache the response.

  - A two-tuple. If it's a two tuple (e.g. ``http_cache=(1,
    {'public':True})``), the first value in the tuple may be a nonzero
    integer or a ``datetime.timedelta`` instance; in either case this value
    will be used as the number of seconds to cache the response. The second
    value in the tuple must be a dictionary. The values present in the
    dictionary will be used as input to the ``Cache-Control`` response
    header. For example: ``http_cache=(3600, {'public':True})`` means 'cache
    for an hour, and add ``public`` to the Cache-Control header of the
    response'. All keys and values supported by the
    ``webob.cachecontrol.CacheControl`` interface may be added to the
    dictionary. Supplying ``{'public':True}`` is equivalent to calling
    ``response.cache_control.public = True``.

  Providing a non-tuple value as ``http_cache`` is equivalent to calling
  ``response.cache_expires(value)`` within your view's body.

  Providing a two-tuple value as ``http_cache`` is equivalent to calling
  ``response.cache_expires(value[0], **value[1])`` within your view's body.

  If you wish to avoid influencing, the ``Expires`` header, and instead wish
  to only influence ``Cache-Control`` headers, pass a tuple as ``http_cache``
  with the first element of ``None``, e.g.: ``(None, {'public':True})``.

Bug Fixes
---------

- Framework wrappers of the original view (such as http_cached and so on)
  relied on being able to trust that the response they were receiving was an
  IResponse. It wasn't always, because the response was resolved by the
  router instead of early in the view wrapping process. This has been fixed.

Documentation
-------------

- Added a section in the "Webob" chapter named "Dealing With A JSON-Encoded
  Request Body" (usage of ``request.json_body``).

Behavior Changes
----------------

- The ``paster pshell``, ``paster proutes``, and ``paster pviews`` commands
  now take a single argument in the form ``/path/to/config.ini#sectionname``
  rather than the previous 2-argument spelling ``/path/to/config.ini
  sectionname``. ``#sectionname`` may be omitted, in which case ``#main`` is
  assumed.

1.1a4 (2011-07-01)
==================

Bug Fixes
---------

- ``pyramid.testing.DummyRequest`` now raises deprecation warnings when
  attributes deprecated for ``pyramid.request.Request`` are accessed (like
  ``response_content_type``). This is for the benefit of folks running unit
  tests which use DummyRequest instead of a "real" request, so they know
  things are deprecated without necessarily needing a functional test suite.

- The ``pyramid.events.subscriber`` directive behaved contrary to the
  documentation when passed more than one interface object to its
  constructor. For example, when the following listener was registered::

     @subscriber(IFoo, IBar)
     def expects_ifoo_events_and_ibar_events(event):
         print event

  The Events chapter docs claimed that the listener would be registered and
  listening for both ``IFoo`` and ``IBar`` events. Instead, it registered an
  "object event" subscriber which would only be called if an IObjectEvent was
  emitted where the object interface was ``IFoo`` and the event interface was
  ``IBar``.

  The behavior now matches the documentation. If you were relying on the
  buggy behavior of the 1.0 ``subscriber`` directive in order to register an
  object event subscriber, you must now pass a sequence to indicate you'd
  like to register a subscriber for an object event. e.g.::

     @subscriber([IFoo, IBar])
     def expects_object_event(object, event):
         print object, event

Features
--------

- Add JSONP renderer (see "JSONP renderer" in the Renderers chapter of the
  documentation).

Deprecations
------------

- Deprecated the ``set_renderer_globals_factory`` method of the Configurator
  and the ``renderer_globals`` Configurator constructor parameter.

Documentation
-------------

- The Wiki and Wiki2 tutorial "Tests" chapters each had two bugs: neither did
  told the user to depend on WebTest, and 2 tests failed in each as the
  result of changes to Pyramid itself. These issues have been fixed.

- Move 1.0.X CHANGES.txt entries to HISTORY.txt.

1.1a3 (2011-06-26)
==================

Features
--------

- Added ``mako.preprocessor`` config file parameter; allows for a Mako
  preprocessor to be specified as a Python callable or Python dotted name.
  See https://github.com/Pylons/pyramid/pull/183 for rationale.

Bug fixes
---------

- Pyramid would raise an AttributeError in the Configurator when attempting
  to set a ``__text__`` attribute on a custom predicate that was actually a
  classmethod. See https://github.com/Pylons/pyramid/pull/217 .

- Accessing or setting deprecated response_* attrs on request
  (e.g. ``response_content_type``) now issues a deprecation warning at access
  time rather than at rendering time.

1.1a2 (2011-06-22)
==================

Bug Fixes
---------

- 1.1a1 broke Akhet by not providing a backwards compatibility import shim
  for ``pyramid.paster.PyramidTemplate``. Now one has been added, although a
  deprecation warning is emitted when Akhet imports it.

- If multiple specs were provided in a single call to
  ``config.add_translation_dirs``, the directories were inserted into the
  beginning of the directory list in the wrong order: they were inserted in
  the reverse of the order they were provided in the ``*specs`` list (items
  later in the list were added before ones earlier in the list). This is now
  fixed.

Backwards Incompatibilities
---------------------------

- The pyramid Router attempted to set a value into the key
  ``environ['repoze.bfg.message']`` when it caught a view-related exception
  for backwards compatibility with applications written for ``repoze.bfg``
  during error handling. It did this by using code that looked like so::

                    # "why" is an exception object
                    try:
                        msg = why[0]
                    except:
                        msg = ''

                    environ['repoze.bfg.message'] = msg

  Use of the value ``environ['repoze.bfg.message']`` was docs-deprecated in
  Pyramid 1.0. Our standing policy is to not remove features after a
  deprecation for two full major releases, so this code was originally slated
  to be removed in Pyramid 1.2. However, computing the
  ``repoze.bfg.message`` value was the source of at least one bug found in
  the wild (https://github.com/Pylons/pyramid/issues/199), and there isn't a
  foolproof way to both preserve backwards compatibility and to fix the bug.
  Therefore, the code which sets the value has been removed in this release.
  Code in exception views which relies on this value's presence in the
  environment should now use the ``exception`` attribute of the request
  (e.g. ``request.exception[0]``) to retrieve the message instead of relying
  on ``request.environ['repoze.bfg.message']``.

1.1a1 (2011-06-20)
==================

Documentation
-------------

- The term "template" used to refer to both "paster templates" and "rendered
  templates" (templates created by a rendering engine. i.e. Mako, Chameleon,
  Jinja, etc.). "Paster templates" will now be refered to as "scaffolds",
  whereas the name for "rendered templates" will remain as "templates."

- The ``wiki`` (ZODB+Traversal) tutorial was updated slightly.

- The ``wiki2`` (SQLA+URL Dispatch) tutorial was updated slightly.

- Make ``pyramid.interfaces.IAuthenticationPolicy`` and
  ``pyramid.interfaces.IAuthorizationPolicy`` public interfaces, and refer to
  them within the ``pyramid.authentication`` and ``pyramid.authorization``
  API docs.

- Render the function definitions for each exposed interface in
  ``pyramid.interfaces``.

- Add missing docs reference to
  ``pyramid.config.Configurator.set_view_mapper`` and refer to it within
  Hooks chapter section named "Using a View Mapper".

- Added section to the "Environment Variables and ``.ini`` File Settings"
  chapter in the narrative documentation section entitled "Adding a Custom
  Setting".

- Added documentation for a "multidict" (e.g. the API of ``request.POST``) as
  interface API documentation.

- Added a section to the "URL Dispatch" narrative chapter regarding the new
  "static" route feature.

- Added "What's New in Pyramid 1.1" to HTML rendering of documentation.

- Added API docs for ``pyramid.authentication.SessionAuthenticationPolicy``.

- Added API docs for ``pyramid.httpexceptions.exception_response``.

- Added "HTTP Exceptions" section to Views narrative chapter including a
  description of ``pyramid.httpexceptions.exception_response``.

Features
--------

- Add support for language fallbacks: when trying to translate for a
  specific territory (such as ``en_GB``) fall back to translations
  for the language (ie ``en``). This brings the translation behaviour in line
  with GNU gettext and fixes partially translated texts when using C
  extensions.

- New authentication policy:
  ``pyramid.authentication.SessionAuthenticationPolicy``, which uses a session
  to store credentials.

- Accessing the ``response`` attribute of a ``pyramid.request.Request``
  object (e.g. ``request.response`` within a view) now produces a new
  ``pyramid.response.Response`` object. This feature is meant to be used
  mainly when a view configured with a renderer needs to set response
  attributes: all renderers will use the Response object implied by
  ``request.response`` as the response object returned to the router.

  ``request.response`` can also be used by code in a view that does not use a
  renderer, however the response object that is produced by
  ``request.response`` must be returned when a renderer is not in play (it is
  not a "global" response).

- Integers and longs passed as ``elements`` to ``pyramid.url.resource_url``
  or ``pyramid.request.Request.resource_url`` e.g. ``resource_url(context,
  request, 1, 2)`` (``1`` and ``2`` are the ``elements``) will now be
  converted implicitly to strings in the result. Previously passing integers
  or longs as elements would cause a TypeError.

- ``pyramid_alchemy`` paster template now uses ``query.get`` rather than
  ``query.filter_by`` to take better advantage of identity map caching.

- ``pyramid_alchemy`` paster template now has unit tests.

- Added ``pyramid.i18n.make_localizer`` API (broken out from
  ``get_localizer`` guts).

- An exception raised by a NewRequest event subscriber can now be caught by
  an exception view.

- It is now possible to get information about why Pyramid raised a Forbidden
  exception from within an exception view. The ``ACLDenied`` object returned
  by the ``permits`` method of each stock authorization policy
  (``pyramid.interfaces.IAuthorizationPolicy.permits``) is now attached to
  the Forbidden exception as its ``result`` attribute. Therefore, if you've
  created a Forbidden exception view, you can see the ACE, ACL, permission,
  and principals involved in the request as
  eg. ``context.result.permission``, ``context.result.acl``, etc within the
  logic of the Forbidden exception view.

- Don't explicitly prevent the ``timeout`` from being lower than the
  ``reissue_time`` when setting up an ``AuthTktAuthenticationPolicy``
  (previously such a configuration would raise a ``ValueError``, now it's
  allowed, although typically nonsensical). Allowing the nonsensical
  configuration made the code more understandable and required fewer tests.

- A new paster command named ``paster pviews`` was added. This command
  prints a summary of potentially matching views for a given path. See the
  section entitled "Displaying Matching Views for a Given URL" in the "View
  Configuration" chapter of the narrative documentation for more information.

- The ``add_route`` method of the Configurator now accepts a ``static``
  argument. If this argument is ``True``, the added route will never be
  considered for matching when a request is handled. Instead, it will only
  be useful for URL generation via ``route_url`` and ``route_path``. See the
  section entitled "Static Routes" in the URL Dispatch narrative chapter for
  more information.

- A default exception view for the context
  ``pyramid.interfaces.IExceptionResponse`` is now registered by default.
  This means that an instance of any exception response class imported from
  ``pyramid.httpexceptions`` (such as ``HTTPFound``) can now be raised from
  within view code; when raised, this exception view will render the
  exception to a response.

- A function named ``pyramid.httpexceptions.exception_response`` is a
  shortcut that can be used to create HTTP exception response objects using
  an HTTP integer status code.

- The Configurator now accepts an additional keyword argument named
  ``exceptionresponse_view``. By default, this argument is populated with a
  default exception view function that will be used when a response is raised
  as an exception. When ``None`` is passed for this value, an exception view
  for responses will not be registered. Passing ``None`` returns the
  behavior of raising an HTTP exception to that of Pyramid 1.0 (the exception
  will propagate to middleware and to the WSGI server).

- The ``pyramid.request.Request`` class now has a ``ResponseClass`` interface
  which points at ``pyramid.response.Response``.

- The ``pyramid.response.Response`` class now has a ``RequestClass``
  interface which points at ``pyramid.request.Request``.

- It is now possible to return an arbitrary object from a Pyramid view
  callable even if a renderer is not used, as long as a suitable adapter to
  ``pyramid.interfaces.IResponse`` is registered for the type of the returned
  object by using the new
  ``pyramid.config.Configurator.add_response_adapter`` API. See the section
  in the Hooks chapter of the documentation entitled "Changing How Pyramid
  Treats View Responses".

- The Pyramid router will now, by default, call the ``__call__`` method of
  WebOb response objects when returning a WSGI response. This means that,
  among other things, the ``conditional_response`` feature of WebOb response
  objects will now behave properly.

- New method named ``pyramid.request.Request.is_response``. This method
  should be used instead of the ``pyramid.view.is_response`` function, which
  has been deprecated.

Bug Fixes
---------

- URL pattern markers used in URL dispatch are permitted to specify a custom
  regex. For example, the pattern ``/{foo:\d+}`` means to match ``/12345``
  (foo==12345 in the match dictionary) but not ``/abc``. However, custom
  regexes in a pattern marker which used squiggly brackets did not work. For
  example, ``/{foo:\d{4}}`` would fail to match ``/1234`` and
  ``/{foo:\d{1,2}}`` would fail to match ``/1`` or ``/11``. One level of
  inner squiggly brackets is now recognized so that the prior two patterns
  given as examples now work. See also
  https://github.com/Pylons/pyramid/issues/#issue/123.

- Don't send port numbers along with domain information in cookies set by
  AuthTktCookieHelper (see https://github.com/Pylons/pyramid/issues/131).

- ``pyramid.url.route_path`` (and the shortcut
  ``pyramid.request.Request.route_url`` method) now include the WSGI
  SCRIPT_NAME at the front of the path if it is not empty (see
  https://github.com/Pylons/pyramid/issues/135).

- ``pyramid.testing.DummyRequest`` now has a ``script_name`` attribute (the
  empty string).

- Don't quote ``:@&+$,`` symbols in ``*elements`` passed to
  ``pyramid.url.route_url`` or ``pyramid.url.resource_url`` (see
  https://github.com/Pylons/pyramid/issues#issue/141).

- Include SCRIPT_NAME in redirects issued by
  ``pyramid.view.append_slash_notfound_view`` (see
  https://github.com/Pylons/pyramid/issues#issue/149).

- Static views registered with ``config.add_static_view`` which also included
  a ``permission`` keyword argument would not work as expected, because
  ``add_static_view`` also registered a route factory internally. Because a
  route factory was registered internally, the context checked by the Pyramid
  permission machinery never had an ACL. ``add_static_view`` no longer
  registers a route with a factory, so the default root factory will be used.

- ``config.add_static_view`` now passes extra keyword arguments it receives
  to ``config.add_route`` (calling add_static_view is mostly logically
  equivalent to adding a view of the type ``pyramid.static.static_view``
  hooked up to a route with a subpath). This makes it possible to pass e.g.,
  ``factory=`` to ``add_static_view`` to protect a particular static view
  with a custom ACL.

- ``testing.DummyRequest`` used the wrong registry (the global registry) as
  ``self.registry`` if a dummy request was created *before* ``testing.setUp``
  was executed (``testing.setUp`` pushes a local registry onto the
  threadlocal stack). Fixed by implementing ``registry`` as a property for
  DummyRequest instead of eagerly assigning an attribute.
  See also https://github.com/Pylons/pyramid/issues/165

- When visiting a URL that represented a static view which resolved to a
  subdirectory, the ``index.html`` of that subdirectory would not be served
  properly. Instead, a redirect to ``/subdir`` would be issued. This has
  been fixed, and now visiting a subdirectory that contains an ``index.html``
  within a static view returns the index.html properly. See also
  https://github.com/Pylons/pyramid/issues/67.

- Redirects issued by a static view did not take into account any existing
  ``SCRIPT_NAME`` (such as one set by a url mapping composite). Now they do.

- The ``pyramid.wsgi.wsgiapp2`` decorator did not take into account the
  ``SCRIPT_NAME`` in the origin request.

- The ``pyramid.wsgi.wsgiapp2`` decorator effectively only worked when it
  decorated a view found via traversal; it ignored the ``PATH_INFO`` that was
  part of a url-dispatch-matched view.

Deprecations
------------

- Deprecated all assignments to ``request.response_*`` attributes (for
  example ``request.response_content_type = 'foo'`` is now deprecated).
  Assignments and mutations of assignable request attributes that were
  considered by the framework for response influence are now deprecated:
  ``response_content_type``, ``response_headerlist``, ``response_status``,
  ``response_charset``, and ``response_cache_for``. Instead of assigning
  these to the request object for later detection by the rendering machinery,
  users should use the appropriate API of the Response object created by
  accessing ``request.response`` (e.g. code which does
  ``request.response_content_type = 'abc'`` should be changed to
  ``request.response.content_type = 'abc'``).

- Passing view-related parameters to
  ``pyramid.config.Configurator.add_route`` is now deprecated. Previously, a
  view was permitted to be connected to a route using a set of ``view*``
  parameters passed to the ``add_route`` method of the Configurator. This
  was a shorthand which replaced the need to perform a subsequent call to
  ``add_view``. For example, it was valid (and often recommended) to do::

     config.add_route('home', '/', view='mypackage.views.myview',
                       view_renderer='some/renderer.pt')

  Passing ``view*`` arguments to ``add_route`` is now deprecated in favor of
  connecting a view to a predefined route via ``Configurator.add_view`` using
  the route's ``route_name`` parameter. As a result, the above example
  should now be spelled::

     config.add_route('home', '/')
     config.add_view('mypackage.views.myview', route_name='home')
                     renderer='some/renderer.pt')

  This deprecation was done to reduce confusion observed in IRC, as well as
  to (eventually) reduce documentation burden (see also
  https://github.com/Pylons/pyramid/issues/164). A deprecation warning is
  now issued when any view-related parameter is passed to
  ``Configurator.add_route``.

- Passing an ``environ`` dictionary to the ``__call__`` method of a
  "traverser" (e.g. an object that implements
  ``pyramid.interfaces.ITraverser`` such as an instance of
  ``pyramid.traversal.ResourceTreeTraverser``) as its ``request`` argument
  now causes a deprecation warning to be emitted. Consumer code should pass a
  ``request`` object instead. The fact that passing an environ dict is
  permitted has been documentation-deprecated since ``repoze.bfg`` 1.1, and
  this capability will be removed entirely in a future version.

- The following (undocumented, dictionary-like) methods of the
  ``pyramid.request.Request`` object have been deprecated: ``__contains__``,
  ``__delitem__``, ``__getitem__``, ``__iter__``, ``__setitem__``, ``get``,
  ``has_key``, ``items``, ``iteritems``, ``itervalues``, ``keys``, ``pop``,
  ``popitem``, ``setdefault``, ``update``, and ``values``. Usage of any of
  these methods will cause a deprecation warning to be emitted. These
  methods were added for internal compatibility in ``repoze.bfg`` 1.1 (code
  that currently expects a request object expected an environ object in BFG
  1.0 and before). In a future version, these methods will be removed
  entirely.

- Deprecated ``pyramid.view.is_response`` function in favor of (newly-added)
  ``pyramid.request.Request.is_response`` method. Determining if an object
  is truly a valid response object now requires access to the registry, which
  is only easily available as a request attribute. The
  ``pyramid.view.is_response`` function will still work until it is removed,
  but now may return an incorrect answer under some (very uncommon)
  circumstances.

Behavior Changes
----------------

- The default Mako renderer is now configured to escape all HTML in
  expression tags. This is intended to help prevent XSS attacks caused by
  rendering unsanitized input from users. To revert this behavior in user's
  templates, they need to filter the expression through the 'n' filter.
  For example, ${ myhtml | n }.
  See https://github.com/Pylons/pyramid/issues/193.

- A custom request factory is now required to return a request object that
  has a ``response`` attribute (or "reified"/lazy property) if they the
  request is meant to be used in a view that uses a renderer. This
  ``response`` attribute should be an instance of the class
  ``pyramid.response.Response``.

- The JSON and string renderer factories now assign to
  ``request.response.content_type`` rather than
  ``request.response_content_type``.

- Each built-in renderer factory now determines whether it should change the
  content type of the response by comparing the response's content type
  against the response's default content type; if the content type is the
  default content type (usually ``text/html``), the renderer changes the
  content type (to ``application/json`` or ``text/plain`` for JSON and string
  renderers respectively).

- The ``pyramid.wsgi.wsgiapp2`` now uses a slightly different method of
  figuring out how to "fix" ``SCRIPT_NAME`` and ``PATH_INFO`` for the
  downstream application. As a result, those values may differ slightly from
  the perspective of the downstream application (for example, ``SCRIPT_NAME``
  will now never possess a trailing slash).

- Previously, ``pyramid.request.Request`` inherited from
  ``webob.request.Request`` and implemented ``__getattr__``, ``__setattr__``
  and ``__delattr__`` itself in order to overidde "adhoc attr" WebOb behavior
  where attributes of the request are stored in the environ. Now,
  ``pyramid.request.Request`` object inherits from (the more recent)
  ``webob.request.BaseRequest`` instead of ``webob.request.Request``, which
  provides the same behavior. ``pyramid.request.Request`` no longer
  implements its own ``__getattr__``, ``__setattr__`` or ``__delattr__`` as a
  result.

- ``pyramid.response.Response`` is now a *subclass* of
  ``webob.response.Response`` (in order to directly implement the
  ``pyramid.interfaces.IResponse`` interface).

- The "exception response" objects importable from ``pyramid.httpexceptions``
  (e.g. ``HTTPNotFound``) are no longer just import aliases for classes that
  actually live in ``webob.exc``. Instead, we've defined our own exception
  classes within the module that mirror and emulate the ``webob.exc``
  exception response objects almost entirely. See the "Design Defense" doc
  section named "Pyramid Uses its Own HTTP Exception Classes" for more
  information.

Backwards Incompatibilities
---------------------------

- Pyramid no longer supports Python 2.4. Python 2.5 or better is required to
  run Pyramid 1.1+.

- The Pyramid router now, by default, expects response objects returned from
  view callables to implement the ``pyramid.interfaces.IResponse`` interface.
  Unlike the Pyramid 1.0 version of this interface, objects which implement
  IResponse now must define a ``__call__`` method that accepts ``environ``
  and ``start_response``, and which returns an ``app_iter`` iterable, among
  other things. Previously, it was possible to return any object which had
  the three WebOb ``app_iter``, ``headerlist``, and ``status`` attributes as
  a response, so this is a backwards incompatibility. It is possible to get
  backwards compatibility back by registering an adapter to IResponse from
  the type of object you're now returning from view callables. See the
  section in the Hooks chapter of the documentation entitled "Changing How
  Pyramid Treats View Responses".

- The ``pyramid.interfaces.IResponse`` interface is now much more extensive.
  Previously it defined only ``app_iter``, ``status`` and ``headerlist``; now
  it is basically intended to directly mirror the ``webob.Response`` API,
  which has many methods and attributes.

- The ``pyramid.httpexceptions`` classes named ``HTTPFound``,
  ``HTTPMultipleChoices``, ``HTTPMovedPermanently``, ``HTTPSeeOther``,
  ``HTTPUseProxy``, and ``HTTPTemporaryRedirect`` now accept ``location`` as
  their first positional argument rather than ``detail``. This means that
  you can do, e.g. ``return pyramid.httpexceptions.HTTPFound('http://foo')``
  rather than ``return
  pyramid.httpexceptions.HTTPFound(location='http//foo')`` (the latter will
  of course continue to work).

Dependencies
------------

- Pyramid now depends on WebOb >= 1.0.2 as tests depend on the bugfix in that
  release: "Fix handling of WSGI environs with missing ``SCRIPT_NAME``".
  (Note that in reality, everyone should probably be using 1.0.4 or better
  though, as WebOb 1.0.2 and 1.0.3 were effectively brownbag releases.)

1.0 (2011-01-30)
================

Documentation
-------------

- Fixed bug in ZODB Wiki tutorial (missing dependency on ``docutils`` in
  "models" step within ``setup.py``).

- Removed API documentation for ``pyramid.testing`` APIs named
  ``registerDummySecurityPolicy``, ``registerResources``, ``registerModels``,
  ``registerEventListener``, ``registerTemplateRenderer``,
  ``registerDummyRenderer``, ``registerView``, ``registerUtility``,
  ``registerAdapter``, ``registerSubscriber``, ``registerRoute``,
  and ``registerSettings``.

- Moved "Using ZODB With ZEO" and "Using repoze.catalog Within Pyramid"
  tutorials out of core documentation and into the Pyramid Tutorials site
  (http://docs.pylonsproject.org/projects/pyramid_tutorials/dev/).

- Changed "Cleaning up After a Request" section in the URL Dispatch chapter
  to use ``request.add_finished_callback`` instead of jamming an object with
  a ``__del__`` into the WSGI environment.

- Remove duplication of ``add_route`` API documentation from URL Dispatch
  narrative chapter.

- Remove duplication of API and narrative documentation in
  ``pyramid.view.view_config`` API docs by pointing to
  ``pyramid.config.add_view`` documentation and narrative chapter
  documentation.

- Removed some API documentation duplicated in narrative portions of
  documentation

- Removed "Overall Flow of Authentication" from SQLAlchemy + URL Dispatch
  wiki tutorial due to print space concerns (moved to Pyramid Tutorials
  site).

Bug Fixes
---------

- Deprecated-since-BFG-1.2 APIs from ``pyramid.testing`` now properly emit
  deprecation warnings.

- Added ``egg:repoze.retry#retry`` middleware to the WSGI pipeline in ZODB
  templates (retry ZODB conflict errors which occur in normal operations).

- Removed duplicate implementations of ``is_response``. Two competing
  implementations existed: one in ``pyramid.config`` and one in
  ``pyramid.view``. Now the one defined in ``pyramid.view`` is used
  internally by ``pyramid.config`` and continues to be advertised as an API.

1.0b3 (2011-01-28)
==================

Bug Fixes
---------

- Use © instead of copyright symbol in paster templates / tutorial
  templates for the benefit of folks who cutnpaste and save to a non-UTF8
  format.

- ``pyramid.view.append_slash_notfound_view`` now preserves GET query
  parameters across redirects.

Documentation
-------------

- Beef up documentation related to ``set_default_permission``: explicitly
  mention that default permissions also protect exception views.

- Paster templates and tutorials now use spaces instead of tabs in their HTML
  templates.

1.0b2 (2011-01-24)
==================

Bug Fixes
---------

- The ``production.ini`` generated by all paster templates now have an
  effective logging level of WARN, which prevents e.g. SQLAlchemy statement
  logging and other inappropriate output.

- The ``production.ini`` of the ``pyramid_routesalchemy`` and
  ``pyramid_alchemy`` paster templates did not have a ``sqlalchemy`` logger
  section, preventing ``paster serve production.ini`` from working.

- The ``pyramid_routesalchemy`` and ``pyramid_alchemy`` paster templates used
  the ``{{package}}`` variable in a place where it should have used the
  ``{{project}}`` variable, causing applications created with uppercase
  letters e.g. ``paster create -t pyramid_routesalchemy Dibbus`` to fail to
  start when ``paster serve development.ini`` was used against the result.
  See https://github.com/Pylons/pyramid/issues/#issue/107

- The ``render_view`` method of ``pyramid.renderers.RendererHelper`` passed
  an incorrect value into the renderer for ``renderer_info``. It now passes
  an instance of ``RendererHelper`` instead of a dictionary, which is
  consistent with other usages. See
  https://github.com/Pylons/pyramid/issues#issue/106

- A bug existed in the ``pyramid.authentication.AuthTktCookieHelper`` which
  would break any usage of an AuthTktAuthenticationPolicy when one was
  configured to reissue its tokens (``reissue_time`` < ``timeout`` /
  ``max_age``). Symptom: ``ValueError: ('Invalid token %r', '')``. See
  https://github.com/Pylons/pyramid/issues#issue/108.

1.0b1 (2011-01-21)
==================

Features
--------

- The AuthTktAuthenticationPolicy now accepts a ``tokens`` parameter via
  ``pyramid.security.remember``. The value must be a sequence of strings.
  Tokens are placed into the auth_tkt "tokens" field and returned in the
  auth_tkt cookie.

- Add ``wild_domain`` argument to AuthTktAuthenticationPolicy, which defaults
  to ``True``. If it is set to ``False``, the feature of the policy which
  sets a cookie with a wilcard domain will be turned off.

- Add a ``MANIFEST.in`` file to each paster template. See
  https://github.com/Pylons/pyramid/issues#issue/95

Bug Fixes
---------

- ``testing.setUp`` now adds a ``settings`` attribute to the registry (both
  when it's passed a registry without any settings and when it creates one).

- The ``testing.setUp`` function now takes a ``settings`` argument, which
  should be a dictionary. Its values will subsequently be available on the
  returned ``config`` object as ``config.registry.settings``.

Documentation
-------------

- Added "What's New in Pyramid 1.0" chapter to HTML rendering of
  documentation.

- Merged caseman-master narrative editing branch, many wording fixes and
  extensions.

- Fix deprecated example showing ``chameleon_zpt`` API call in testing
  narrative chapter.

- Added "Adding Methods to the Configurator via ``add_directive``" section to
  Advanced Configuration narrative chapter.

- Add docs for ``add_finished_callback``, ``add_response_callback``,
  ``route_path``, ``route_url``, and ``static_url`` methods to
  ``pyramid.request.Request`` API docs.

- Add (minimal) documentation about using I18N within Mako templates to
  "Internationalization and Localization" narrative chapter.

- Move content of "Forms" chapter back to "Views" chapter; I can't think of a
  better place to put it.

- Slightly improved interface docs for ``IAuthorizationPolicy``.

- Minimally explain usage of custom regular expressions in URL dispatch
  replacement markers within URL Dispatch chapter.

Deprecations
-------------

- Using the ``pyramid.view.bfg_view`` alias for ``pyramid.view.view_config``
  (a backwards compatibility shim) now issues a deprecation warning.

Backwards Incompatibilities
---------------------------

- Using ``testing.setUp`` now registers an ISettings utility as a side
  effect. Some test code which queries for this utility after
  ``testing.setUp`` via queryAdapter will expect a return value of ``None``.
  This code will need to be changed.

- When a ``pyramid.exceptions.Forbidden`` error is raised, its status code
  now ``403 Forbidden``. It was previously ``401 Unauthorized``, for
  backwards compatibility purposes with ``repoze.bfg``. This change will
  cause problems for users of Pyramid with ``repoze.who``, which intercepts
  ``401 Unauthorized`` by default, but allows ``403 Forbidden`` to pass
  through. Those deployments will need to configure ``repoze.who`` to also
  react to ``403 Forbidden``.

- The default value for the ``cookie_on_exception`` parameter to
  ``pyramid.session.UnencyrptedCookieSessionFactory`` is now ``True``. This
  means that when view code causes an exception to be raised, and the session
  has been mutated, a cookie will be sent back in the response. Previously
  its default value was ``False``.

Paster Templates
----------------

- The ``pyramid_zodb``, ``pyramid_routesalchemy`` and ``pyramid_alchemy``
  paster templates now use a default "commit veto" hook when configuring the
  ``repoze.tm2`` transaction manager in ``development.ini``. This prevents a
  transaction from being committed when the response status code is within
  the 400 or 500 ranges. See also
  http://docs.repoze.org/tm2/#using-a-commit-veto.

1.0a10 (2011-01-18)
===================

Bug Fixes
---------

- URL dispatch now properly handles a ``.*`` or ``*`` appearing in a regex
  match when used inside brackets. Resolves issue #90.

Backwards Incompatibilities
---------------------------

- The ``add_handler`` method of a Configurator has been removed from the
  Pyramid core. Handlers are now a feature of the ``pyramid_handlers``
  package, which can be downloaded from PyPI. Documentation for the package
  should be available via
  http://pylonsproject.org/projects/pyramid_handlers/dev/, which describes how
  to add a configuration statement to your ``main`` block to reobtain this
  method. You will also need to add an ``install_requires`` dependency upon
  ``pyramid_handlers`` to your ``setup.py`` file.

- The ``load_zcml`` method of a Configurator has been removed from the
  Pyramid core. Loading ZCML is now a feature of the ``pyramid_zcml``
  package, which can be downloaded from PyPI. Documentation for the package
  should be available via
  http://pylonsproject.org/projects/pyramid_zcml/dev/, which describes how
  to add a configuration statement to your ``main`` block to reobtain this
  method. You will also need to add an ``install_requires`` dependency upon
  ``pyramid_zcml`` to your ``setup.py`` file.

- The ``pyramid.includes`` subpackage has been removed. ZCML files which use
  include the package ``pyramid.includes`` (e.g. ``<include
  package="pyramid.includes"/>``) now must include the ``pyramid_zcml``
  package instead (e.g. ``<include package="pyramid_zcml"/>``).

- The ``pyramid.view.action`` decorator has been removed from the Pyramid
  core. Handlers are now a feature of the ``pyramid_handlers`` package. It
  should now be imported from ``pyramid_handlers`` e.g. ``from
  pyramid_handlers import action``.

- The ``handler`` ZCML directive has been removed. It is now a feature of
  the ``pyramid_handlers`` package.

- The ``pylons_minimal``, ``pylons_basic`` and ``pylons_sqla`` paster
  templates were removed. Use ``pyramid_sqla`` (available from PyPI) as a
  generic replacement for Pylons-esque development.

- The ``make_app`` function has been removed from the ``pyramid.router``
  module. It continues life within the ``pyramid_zcml`` package. This
  leaves the ``pyramid.router`` module without any API functions.

- The ``configure_zcml`` setting within the deployment settings (within
  ``**settings`` passed to a Pyramid ``main`` function) has ceased to have any
  meaning.

Features
--------

- ``pyramid.testing.setUp`` and ``pyramid.testing.tearDown`` have been
  undeprecated. They are now the canonical setup and teardown APIs for test
  configuration, replacing "direct" creation of a Configurator. This is a
  change designed to provide a facade that will protect against any future
  Configurator deprecations.

- Add ``charset`` attribute to ``pyramid.testing.DummyRequest``
  (unconditionally ``UTF-8``).

- Add ``add_directive`` method to configurator, which allows framework
  extenders to add methods to the configurator (ala ZCML directives).

- When ``Configurator.include`` is passed a *module* as an argument, it
  defaults to attempting to find and use a callable named ``includeme``
  within that module. This makes it possible to use
  ``config.include('some.module')`` rather than
  ``config.include('some.module.somefunc')`` as long as the include function
  within ``some.module`` is named ``includeme``.

- The ``bfg2pyramid`` script now converts ZCML include tags that have
  ``repoze.bfg.includes`` as a package attribute to the value
  ``pyramid_zcml``. For example, ``<include package="repoze.bfg.includes">``
  will be converted to ``<include package="pyramid_zcml">``.

Paster Templates
----------------

- All paster templates now use ``pyramid.testing.setUp`` and
  ``pyramid.testing.tearDown`` rather than creating a Configurator "by hand"
  within their ``tests.py`` module, as per decision in features above.

- The ``starter_zcml`` paster template has been moved to the ``pyramid_zcml``
  package.

Documentation
-------------

- The wiki and wiki2 tutorials now use ``pyramid.testing.setUp`` and
  ``pyramid.testing.tearDown`` rather than creating a Configurator "by hand",
  as per decision in features above.

- The "Testing" narrative chapter now explains ``pyramid.testing.setUp`` and
  ``pyramid.testing.tearDown`` instead of Configurator creation and
  ``Configurator.begin()`` and ``Configurator.end()``.

- Document the ``request.override_renderer`` attribute within the narrative
  "Renderers" chapter in a section named "Overriding A Renderer at Runtime".

- The "Declarative Configuration" narrative chapter has been removed (it was
  moved to the ``pyramid_zcml`` package).

- Most references to ZCML in narrative chapters have been removed or
  redirected to ``pyramid_zcml`` locations.

Deprecations
------------

- Deprecation warnings related to import of the following API functions were
  added: ``pyramid.traversal.find_model``, ``pyramid.traversal.model_path``,
  ``pyramid.traversal.model_path_tuple``, ``pyramid.url.model_url``. The
  instructions emitted by the deprecation warnings instruct the developer to
  change these method spellings to their ``resource`` equivalents. This is a
  consequence of the mass concept rename of "model" to "resource" performed
  in 1.0a7.

1.0a9 (2011-01-08)
==================

Bug Fixes
---------

- The ``proutes`` command tried too hard to resolve the view for printing,
  resulting in exceptions when an exceptional root factory was encountered.
  Instead of trying to resolve the view, if it cannot, it will now just print
  ``<unknown>``.

- The `self` argument was included in new methods of the ``ISession`` interface
  signature, causing ``pyramid_beaker`` tests to fail.

- Readd ``pyramid.traversal.model_path_tuple`` as an alias for
  ``pyramid.traversal.resource_path_tuple`` for backwards compatibility.

Features
--------

- Add a new API ``pyramid.url.current_route_url``, which computes a URL based
  on the "current" route (if any) and its matchdict values.

- ``config.add_view`` now accepts a ``decorator`` keyword argument, a callable
  which will decorate the view callable before it is added to the registry.

- If a handler class provides an ``__action_decorator__`` attribute (usually
  a classmethod or staticmethod), use that as the decorator for each view
  registration for that handler.

- The ``pyramid.interfaces.IAuthenticationPolicy`` interface now specifies an
  ``unauthenticated_userid`` method. This method supports an important
  optimization required by people who are using persistent storages which do
  not support object caching and whom want to create a "user object" as a
  request attribute.

- A new API has been added to the ``pyramid.security`` module named
  ``unauthenticated_userid``. This API function calls the
  ``unauthenticated_userid`` method of the effective security policy.

- An ``unauthenticated_userid`` method has been added to the dummy
  authentication policy returned by
  ``pyramid.config.Configurator.testing_securitypolicy``. It returns the
  same thing as that the dummy authentication policy's
  ``authenticated_userid`` method.

- The class ``pyramid.authentication.AuthTktCookieHelper`` is now an API.
  This class can be used by third-party authentication policy developers to
  help in the mechanics of authentication cookie-setting.

- New constructor argument to Configurator: ``default_view_mapper``. Useful
  to create systems that have alternate view calling conventions. A view
  mapper allows objects that are meant to be used as view callables to have
  an arbitrary argument list and an arbitrary result. The object passed as
  ``default_view_mapper`` should implement the
  ``pyramid.interfaces.IViewMapperFactory`` interface.

- add a ``set_view_mapper`` API to Configurator. Has
  the same result as passing ``default_view_mapper`` to the Configurator
  constructor.

- ``config.add_view`` now accepts a ``mapper`` keyword argument, which should
  either be ``None``, a string representing a Python dotted name, or an
  object which is an ``IViewMapperFactory``. This feature is not useful for
  "civilians", only for extension writers.

- Allow static renderer provided during view registration to be overridden at
  request time via a request attribute named ``override_renderer``, which
  should be the name of a previously registered renderer. Useful to provide
  "omnipresent" RPC using existing rendered views.

- Instances of ``pyramid.testing.DummyRequest`` now have a ``session``
  object, which is mostly a dictionary, but also implements the other session
  API methods for flash and CSRF.

Backwards Incompatibilities
---------------------------

- Since the ``pyramid.interfaces.IAuthenticationPolicy`` interface now
  specifies that a policy implementation must implement an
  ``unauthenticated_userid`` method, all third-party custom authentication
  policies now must implement this method. It, however, will only be called
  when the global function named ``pyramid.security.unauthenticated_userid``
  is invoked, so if you're not invoking that, you will not notice any issues.

- ``pyramid.interfaces.ISession.get_csrf_token`` now mandates that an
  implementation should return a *new* token if one doesn't already exist in
  the session (previously it would return None). The internal sessioning
  implementation has been changed.

Documentation
-------------

- The (weak) "Converting a CMF Application to Pyramid" tutorial has been
  removed from the tutorials section. It was moved to the
  ``pyramid_tutorials`` Github repository.

- The "Resource Location and View Lookup" chapter has been replaced with a
  variant of Rob Miller's "Much Ado About Traversal" (originally published at
  http://blog.nonsequitarian.org/2010/much-ado-about-traversal/).

- Many minor wording tweaks and refactorings (merged Casey Duncan's docs
  fork, in which he is working on general editing).

- Added (weak) description of new view mapper feature to Hooks narrative
  chapter.

- Split views chapter into 2: View Callables and View Configuration.

- Reorder Renderers and Templates chapters after View Callables but before
  View Configuration.

- Merge Session Objects, Cross-Site Request Forgery, and Flash Messaging
  chapter into a single Sessions chapter.

- The Wiki and Wiki2 tutorials now have much nicer CSS and graphics.

Internals
---------

- The "view derivation" code is now factored into a set of classes rather
  than a large number of standalone functions (a side effect of the
  view mapper refactoring).

- The ``pyramid.renderer.RendererHelper`` class has grown a ``render_view``
  method, which is used by the default view mapper (a side effect of the
  view mapper refactoring).

- The object passed as ``renderer`` to the "view deriver" is now an instance
  of ``pyramid.renderers.RendererHelper`` rather than a dictionary (a side
  effect of view mapper refactoring).

- The class used as the "page template" in ``pyramid.chameleon_text`` was
  removed, in preference to using a Chameleon-inbuilt version.

- A view callable wrapper registered in the registry now contains an
  ``__original_view__`` attribute which references the original view callable
  (or class).

- The (non-API) method of all internal authentication policy implementations
  previously named ``_get_userid`` is now named ``unauthenticated_userid``,
  promoted to an API method. If you were overriding this method, you'll now
  need to override it as ``unauthenticated_userid`` instead.

- Remove (non-API) function of config.py named _map_view.

1.0a8 (2010-12-27)
==================

Bug Fixes
---------

- The name ``registry`` was not available in the ``paster pshell``
  environment under IPython.

Features
--------

- If a resource implements a ``__resource_url__`` method, it will be called
  as the result of invoking the ``pyramid.url.resource_url`` function to
  generate a URL, overriding the default logic. See the new "Generating The
  URL Of A Resource" section within the Resources narrative chapter.

- Added flash messaging, as described in the "Flash Messaging" narrative
  documentation chapter.

- Added CSRF token generation, as described in the narrative chapter entitled
  "Preventing Cross-Site Request Forgery Attacks".

- Prevent misunderstanding of how the ``view`` and ``view_permission``
  arguments to add_route work by raising an exception during configuration if
  view-related arguments exist but no ``view`` argument is passed.

- Add ``paster proute`` command which displays a summary of the routing
  table. See the narrative documentation section within the "URL Dispatch"
  chapter entitled "Displaying All Application Routes".

Paster Templates
----------------

- The ``pyramid_zodb`` Paster template no longer employs ZCML. Instead, it
  is based on scanning.

Documentation
-------------

- Added "Generating The URL Of A Resource" section to the Resources narrative
  chapter (includes information about overriding URL generation using
  ``__resource_url__``).

- Added "Generating the Path To a Resource" section to the Resources
  narrative chapter.

- Added "Finding a Resource by Path" section to the Resources narrative
  chapter.

- Added "Obtaining the Lineage of a Resource" to the Resources narrative
  chapter.

- Added "Determining if a Resource is In The Lineage of Another Resource" to
  Resources narrative chapter.

- Added "Finding the Root Resource" to Resources narrative chapter.

- Added "Finding a Resource With a Class or Interface in Lineage" to
  Resources narrative chapter.

- Added a "Flash Messaging" narrative documentation chapter.

- Added a narrative chapter entitled "Preventing Cross-Site Request Forgery
  Attacks".

- Changed the "ZODB + Traversal Wiki Tutorial" based on changes to
  ``pyramid_zodb`` Paster template.

- Added "Advanced Configuration" narrative chapter which documents how to
  deal with configuration conflicts, two-phase configuration, ``include`` and
  ``commit``.

- Fix API documentation rendering for ``pyramid.view.static``

- Add "Pyramid Provides More Than One Way to Do It" to Design Defense
  documentation.

- Changed "Static Assets" narrative chapter: clarify that ``name`` represents
  a prefix unless it's a URL, added an example of a root-relative static view
  fallback for URL dispatch, added an example of creating a simple view that
  returns the body of a file.

- Move ZCML usage in Hooks chapter to Declarative Configuration chapter.

- Merge "Static Assets" chapter into the "Assets" chapter.

- Added narrative documentation section within the "URL Dispatch" chapter
  entitled "Displaying All Application Routes" (for ``paster proutes``
  command).

1.0a7 (2010-12-20)
==================

Terminology Changes
-------------------

- The Pyramid concept previously known as "model" is now known as "resource".
  As a result:

  - The following API changes have been made::

      pyramid.url.model_url ->
                        pyramid.url.resource_url

      pyramid.traversal.find_model ->
                        pyramid.url.find_resource

      pyramid.traversal.model_path ->
                        pyramid.traversal.resource_path

      pyramid.traversal.model_path_tuple ->
                        pyramid.traversal.resource_path_tuple

      pyramid.traversal.ModelGraphTraverser ->
                        pyramid.traversal.ResourceTreeTraverser

      pyramid.config.Configurator.testing_models ->
                        pyramid.config.Configurator.testing_resources

      pyramid.testing.registerModels ->
                        pyramid.testing.registerResources

      pyramid.testing.DummyModel ->
                        pyramid.testing.DummyResource

   - All documentation which previously referred to "model" now refers to
     "resource".

   - The ``starter`` and ``starter_zcml`` paster templates now have a
     ``resources.py`` module instead of a ``models.py`` module.

  - Positional argument names of various APIs have been changed from
    ``model`` to ``resource``.

  Backwards compatibility shims have been left in place in all cases. They
  will continue to work "forever".

- The Pyramid concept previously known as "resource" is now known as "asset".
  As a result:

  - The (non-API) module previously known as ``pyramid.resource`` is now
    known as ``pyramid.asset``.

  - All docs that previously referred to "resource specification" now refer
    to "asset specification".

  - The following API changes were made::

      pyramid.config.Configurator.absolute_resource_spec ->
                        pyramid.config.Configurator.absolute_asset_spec

      pyramid.config.Configurator.override_resource ->
                        pyramid.config.Configurator.override_asset

  - The ZCML directive previously known as ``resource`` is now known as
    ``asset``.

  - The setting previously known as ``BFG_RELOAD_RESOURCES`` (envvar) or
    ``reload_resources`` (config file) is now known, respectively, as
    ``PYRAMID_RELOAD_ASSETS`` and ``reload_assets``.

  Backwards compatibility shims have been left in place in all cases. They
  will continue to work "forever".

Bug Fixes
---------

- Make it possible to succesfully run all tests via ``nosetests`` command
  directly (rather than indirectly via ``python setup.py nosetests``).

- When a configuration conflict is encountered during scanning, the conflict
  exception now shows the decorator information that caused the conflict.

Features
--------

- Added ``debug_routematch`` configuration setting that logs matched routes
  (including the matchdict and predicates).

- The name ``registry`` is now available in a ``pshell`` environment by
  default. It is the application registry object.

Environment
-----------

- All environment variables which used to be prefixed with ``BFG_`` are now
  prefixed with ``PYRAMID_`` (e.g. ``BFG_DEBUG_NOTFOUND`` is now
  ``PYRAMID_DEBUG_NOTFOUND``)

Documentation
-------------

- Added "Debugging Route Matching" section to the urldispatch narrative
  documentation chapter.

- Added reference to ``PYRAMID_DEBUG_ROUTEMATCH`` envvar and ``debug_routematch``
  config file setting to the Environment narrative docs chapter.

- Changed "Project" chapter slightly to expand on use of ``paster pshell``.

- Direct Jython users to Mako rather than Jinja2 in "Install" narrative
  chapter.

- Many changes to support terminological renaming of "model" to "resource"
  and "resource" to "asset".

- Added an example of ``WebTest`` functional testing to the testing narrative
  chapter.

- Rearranged chapter ordering by popular demand (URL dispatch first, then
  traversal). Put hybrid chapter after views chapter.

- Split off "Renderers" as its own chapter from "Views" chapter in narrative
  documentation.

Paster Templates
----------------

- Added ``debug_routematch = false`` to all paster templates.

Dependencies
------------

- Depend on Venusian >= 0.5 (for scanning conflict exception decoration).

1.0a6 (2010-12-15)
==================

Bug Fixes
---------

- 1.0a5 introduced a bug when ``pyramid.config.Configurator.scan`` was used
  without a ``package`` argument (e.g. ``config.scan()`` as opposed to
  ``config.scan('packagename')``. The symptoms were: lots of deprecation
  warnings printed to the console about imports of deprecated Pyramid
  functions and classes and non-detection of view callables decorated with
  ``view_config`` decorators. This has been fixed.

- Tests now pass on Windows (no bugs found, but a few tests in the test suite
  assumed UNIX path segments in filenames).

Documentation
-------------

- If you followed it to-the-letter, the ZODB+Traversal Wiki tutorial would
  instruct you to run a test which would fail because the view callable
  generated by the ``pyramid_zodb`` tutorial used a one-arg view callable,
  but the test in the sample code used a two-arg call.

- Updated ZODB+Traversal tutorial setup.py of all steps to match what's
  generated by ``pyramid_zodb``.

- Fix reference to ``repoze.bfg.traversalwrapper`` in "Models" chapter (point
  at ``pyramid_traversalwrapper`` instead).

1.0a5 (2010-12-14)
==================

Features
--------

- Add a ``handler`` ZCML directive. This directive does the same thing as
  ``pyramid.configuration.add_handler``.

- A new module named ``pyramid.config`` was added. It subsumes the duties of
  the older ``pyramid.configuration`` module.

- The new ``pyramid.config.Configurator` class has API methods that the older
  ``pyramid.configuration.Configurator`` class did not: ``with_context`` (a
  classmethod), ``include``, ``action``, and ``commit``. These methods exist
  for imperative application extensibility purposes.

- The ``pyramid.testing.setUp`` function now accepts an ``autocommit``
  keyword argument, which defaults to ``True``. If it is passed ``False``,
  the Config object returned by ``setUp`` will be a non-autocommiting Config
  object.

- Add logging configuration to all paster templates.

- ``pyramid_alchemy``, ``pyramid_routesalchemy``, and ``pylons_sqla`` paster
  templates now use idiomatic SQLAlchemy configuration in their respective
  ``.ini`` files and Python code.

- ``pyramid.testing.DummyRequest`` now has a class variable,
  ``query_string``, which defaults to the empty string.

- Add support for json on GAE by catching NotImplementedError and importing
  simplejson from django.utils.

- The Mako renderer now accepts a resource specification for
  ``mako.module_directory``.

- New boolean Mako settings variable ``mako.strict_undefined``. See `Mako
  Context Variables
  <http://www.makotemplates.org/docs/runtime.html#context-variables>`_ for
  its meaning.

Dependencies
------------

- Depend on Mako 0.3.6+ (we now require the ``strict_undefined`` feature).

Bug Fixes
---------

- When creating a Configurator from within a ``paster pshell`` session, you
  were required to pass a ``package`` argument although ``package`` is not
  actually required. If you didn't pass ``package``, you would receive an
  error something like ``KeyError: '__name__'`` emanating from the
  ``pyramid.path.caller_module`` function. This has now been fixed.

- The ``pyramid_routesalchemy`` paster template's unit tests failed
  (``AssertionError: 'SomeProject' != 'someproject'``). This is fixed.

- Make default renderer work (renderer factory registered with no name, which
  is active for every view unless the view names a specific renderer).

- The Mako renderer did not properly turn the ``mako.imports``,
  ``mako.default_filters``, and ``mako.imports`` settings into lists.

- The Mako renderer did not properly convert the ``mako.error_handler``
  setting from a dotted name to a callable.

Documentation
-------------

- Merged many wording, readability, and correctness changes to narrative
  documentation chapters from https://github.com/caseman/pyramid (up to and
  including "Models" narrative chapter).

- "Sample Applications" section of docs changed to note existence of Cluegun,
  Shootout and Virginia sample applications, ported from their repoze.bfg
  origin packages.

- SQLAlchemy+URLDispatch tutorial updated to integrate changes to
  ``pyramid_routesalchemy`` template.

- Add ``pyramid.interfaces.ITemplateRenderer`` interface to Interfaces API
  chapter (has ``implementation()`` method, required to be used when getting
  at Chameleon macros).

- Add a "Modifying Package Structure" section to the project narrative
  documentation chapter (explain turning a module into a package).

- Documentation was added for the new ``handler`` ZCML directive in the ZCML
  section.

Deprecations
------------

- ``pyramid.configuration.Configurator`` is now deprecated. Use
  ``pyramid.config.Configurator``, passing its constructor
  ``autocommit=True`` instead. The ``pyramid.configuration.Configurator``
  alias will live for a long time, as every application uses it, but its
  import now issues a deprecation warning. The
  ``pyramid.config.Configurator`` class has the same API as
  ``pyramid.configuration.Configurator`` class, which it means to replace,
  except by default it is a *non-autocommitting* configurator. The
  now-deprecated ``pyramid.configuration.Configurator`` will autocommit every
  time a configuration method is called.

  The ``pyramid.configuration`` module remains, but it is deprecated. Use
  ``pyramid.config`` instead.

1.0a4 (2010-11-21)
==================

Features
--------

- URL Dispatch now allows for replacement markers to be located anywhere
  in the pattern, instead of immediately following a ``/``.

- URL Dispatch now uses the form ``{marker}`` to denote a replace marker in
  the route pattern instead of ``:marker``. The old colon-style marker syntax
  is still accepted for backwards compatibility. The new format allows a
  regular expression for that marker location to be used instead of the
  default ``[^/]+``, for example ``{marker:\d+}`` is now valid to require the
  marker to be digits.

- Add a ``pyramid.url.route_path`` API, allowing folks to generate relative
  URLs. Calling ``route_path`` is the same as calling
  ``pyramid.url.route_url`` with the argument ``_app_url`` equal to the empty
  string.

- Add a ``pyramid.request.Request.route_path`` API. This is a convenience
  method of the request which calls ``pyramid.url.route_url``.

- Make test suite pass on Jython (requires PasteScript trunk, presumably to
  be 1.7.4).

- Make test suite pass on PyPy (Chameleon doesn't work).

- Surrounding application configuration with ``config.begin()`` and
  ``config.end()`` is no longer necessary. All paster templates have been
  changed to no longer call these functions.

- Fix configurator to not convert ``ImportError`` to ``ConfigurationError``
  if the import that failed was unrelated to the import requested via a
  dotted name when resolving dotted names (such as view dotted names).

Documentation
-------------

- SQLAlchemy+URLDispatch and ZODB+Traversal tutorials have been updated to
  not call ``config.begin()`` or ``config.end()``.

Bug Fixes
---------

- Add deprecation warnings to import of ``pyramid.chameleon_text`` and
  ``pyramid.chameleon_zpt`` of ``get_renderer``, ``get_template``,
  ``render_template``, and ``render_template_to_response``.

- Add deprecation warning for import of ``pyramid.zcml.zcml_configure`` and
  ``pyramid.zcml.file_configure``.

- The ``pyramid_alchemy`` paster template had a typo, preventing an import
  from working.

- Fix apparent failures when calling ``pyramid.traversal.find_model(root,
  path)`` or ``pyramid.traversal.traverse(path)`` when ``path`` is
  (erroneously) a Unicode object. The user is meant to pass these APIs a
  string object, never a Unicode object. In practice, however, users indeed
  pass Unicode. Because the string that is passed must be ASCII encodeable,
  now, if they pass a Unicode object, its data is eagerly converted to an
  ASCII string rather than being passed along to downstream code as a
  convenience to the user and to prevent puzzling second-order failures from
  cropping up (all failures will occur within ``pyramid.traversal.traverse``
  rather than later down the line as the result of calling e.g.
  ``traversal_path``).

Backwards Incompatibilities
---------------------------

- The ``pyramid.testing.zcml_configure`` API has been removed. It had been
  advertised as removed since repoze.bfg 1.2a1, but hadn't actually been.

Deprecations
------------

- The ``pyramid.settings.get_settings`` API is now deprecated. Use
  ``pyramid.threadlocals.get_current_registry().settings`` instead or use the
  ``settings`` attribute of the registry available from the request
  (``request.registry.settings``).

Documentation
-------------

- Removed ``zodbsessions`` tutorial chapter. It's still useful, but we now
  have a SessionFactory abstraction which competes with it, and maintaining
  documentation on both ways to do it is a distraction.

Internal
--------

- Replace Twill with WebTest in internal integration tests (avoid deprecation
  warnings generated by Twill).

1.0a3 (2010-11-16)
==================

Features
--------

- Added Mako TemplateLookup settings for ``mako.error_handler``,
  ``mako.default_filters``, and ``mako.imports``.

- Normalized all paster templates: each now uses the name ``main`` to
  represent the function that returns a WSGI application, each now uses
  WebError, each now has roughly the same shape of development.ini style.

- Added class vars ``matchdict`` and ``matched_route`` to
  ``pyramid.request.Request``. Each is set to ``None``.

- New API method: ``pyramid.settings.asbool``.

- New API methods for ``pyramid.request.Request``: ``model_url``,
  ``route_url``, and ``static_url``. These are simple passthroughs for their
  respective functions in ``pyramid.url``.

- The ``settings`` object which used to be available only when
  ``request.settings.get_settings`` was called is now available as
  ``registry.settings`` (e.g. ``request.registry.settings`` in view code).

Bug Fixes
---------

- The pylons_* paster templates erroneously used the ``{squiggly}`` routing
  syntax as the pattern supplied to ``add_route``. This style of routing is
  not supported. They were replaced with ``:colon`` style route patterns.

- The pylons_* paster template used the same string
  (``your_app_secret_string``) for the ``session.secret`` setting in the
  generated ``development.ini``. This was a security risk if left unchanged
  in a project that used one of the templates to produce production
  applications. It now uses a randomly generated string.

Documentation
-------------

- ZODB+traversal wiki (``wiki``) tutorial updated due to changes to
  ``pyramid_zodb`` paster template.

- SQLAlchemy+urldispach wiki (``wiki2``) tutorial updated due to changes to
  ``pyramid_routesalchemy`` paster template.

- Documented the ``matchdict`` and ``matched_route`` attributes of the
  request object in the Request API documentation.

Deprecations
------------

- Obtaining the ``settings`` object via
  ``registry.{get|query}Utility(ISettings)`` is now deprecated. Instead,
  obtain the ``settings`` object via the ``registry.settings`` attribute. A
  backwards compatibility shim was added to the registry object to register
  the settings object as an ISettings utility when ``setattr(registry,
  'settings', foo)`` is called, but it will be removed in a later release.

- Obtaining the ``settings`` object via ``pyramid.settings.get_settings`` is
  now deprecated. Obtain it as the ``settings`` attribute of the registry
  now (obtain the registry via ``pyramid.threadlocal.get_registry`` or as
  ``request.registry``).

Behavior Differences
--------------------

- Internal: ZCML directives no longer call get_current_registry() if there's
  a ``registry`` attribute on the ZCML context (kill off use of
  threadlocals).

- Internal: Chameleon template renderers now accept two arguments: ``path``
  and ``lookup``. ``Lookup`` will be an instance of a lookup class which
  supplies (late-bound) arguments for debug, reload, and translate. Any
  third-party renderers which use (the non-API) function
  ``pyramid.renderers.template_renderer_factory`` will need to adjust their
  implementations to obey the new callback argument list. This change was to
  kill off inappropriate use of threadlocals.

1.0a2 (2010-11-09)
==================

Documentation
-------------

- All references to events by interface
  (e.g. ``pyramid.interfaces.INewRequest``) have been changed to reference
  their concrete classes (e.g. ``pyramid.events.NewRequest``) in
  documentation about making subscriptions.

- All references to Pyramid-the-application were changed from mod-`pyramid`
  to app-`Pyramid`. A custom role setting was added to ``docs/conf.py`` to
  allow for this. (internal)

1.0a1 (2010-11-05)
==================

Features (delta from BFG 1.3)
-------------------------------

- Mako templating renderer supports resource specification format for
  template lookups and within Mako templates. Absolute filenames must
  be used in Pyramid to avoid this lookup process.

- Add ``pyramid.httpexceptions`` module, which is a facade for the
  ``webob.exc`` module.

- Direct built-in support for the Mako templating language.

- A new configurator method exists: ``add_handler``. This method adds
  a Pylons-style "view handler" (such a thing used to be called a
  "controller" in Pylons 1.0).

- New argument to configurator: ``session_factory``.

- New method on configurator: ``set_session_factory``

- Using ``request.session`` now returns a (dictionary-like) session
  object if a session factory has been configured.

- The request now has a new attribute: ``tmpl_context`` for benefit of
  Pylons users.

- The decorator previously known as ``pyramid.view.bfg_view`` is now
  known most formally as ``pyramid.view.view_config`` in docs and
  paster templates. An import of ``pyramid.view.bfg_view``, however,
  will continue to work "forever".

- New API methods in ``pyramid.session``: ``signed_serialize`` and
  ``signed_deserialize``.

- New interface: ``pyramid.interfaces.IRendererInfo``. An object of this type
  is passed to renderer factory constructors (see "Backwards
  Incompatibilities").

- New event type: ``pyramid.interfaces.IBeforeRender``. An object of this type
  is sent as an event before a renderer is invoked (but after the
  application-level renderer globals factory added via
  ``pyramid.configurator.configuration.set_renderer_globals_factory``, if any,
  has injected its own keys). Applications may now subscribe to the
  ``IBeforeRender`` event type in order to introspect the and modify the set of
  renderer globals before they are passed to a renderer. The event object
  iself has a dictionary-like interface that can be used for this purpose. For
  example::

    from repoze.events import subscriber
    from pyramid.interfaces import IRendererGlobalsEvent

    @subscriber(IRendererGlobalsEvent)
    def add_global(event):
        event['mykey'] = 'foo'

  If a subscriber attempts to add a key that already exist in the renderer
  globals dictionary, a ``KeyError`` is raised. This limitation is due to the
  fact that subscribers cannot be ordered relative to each other. The set of
  keys added to the renderer globals dictionary by all subscribers and
  app-level globals factories must be unique.

- New class: ``pyramid.response.Response``. This is a pure facade for
  ``webob.Response`` (old code need not change to use this facade, it's
  existence is mostly for vanity and documentation-generation purposes).

- All preexisting paster templates (except ``zodb``) now use "imperative"
  configuration (``starter``, ``routesalchemy``, ``alchemy``).

- A new paster template named ``pyramid_starter_zcml`` exists, which uses
  declarative configuration.

Documentation (delta from BFG 1.3)
-----------------------------------

- Added a ``pyramid.httpexceptions`` API documentation chapter.

- Added a ``pyramid.session`` API documentation chapter.

- Added a ``Session Objects`` narrative documentation chapter.

- Added an API chapter for the ``pyramid.personality`` module.

- Added an API chapter for the ``pyramid.response`` module.

- All documentation which previously referred to ``webob.Response`` now uses
  ``pyramid.response.Response`` instead.

- The documentation has been overhauled to use imperative configuration,
  moving declarative configuration (ZCML) explanations to a separate
  narrative chapter ``declarative.rst``.

- The ZODB Wiki tutorial was updated to take into account changes to the
  ``pyramid_zodb`` paster template.

- The SQL Wiki tutorial was updated to take into account changes to the
  ``pyramid_routesalchemy`` paster template.

Backwards Incompatibilities (with BFG 1.3)
------------------------------------------

- There is no longer an ``IDebugLogger`` registered as a named utility
  with the name ``repoze.bfg.debug``.

- The logger which used to have the name of ``repoze.bfg.debug`` now
  has the name ``pyramid.debug``.

- The deprecated API ``pyramid.testing.registerViewPermission``
  has been removed.

- The deprecated API named ``pyramid.testing.registerRoutesMapper``
  has been removed.

- The deprecated API named ``pyramid.request.get_request`` was removed.

- The deprecated API named ``pyramid.security.Unauthorized`` was
  removed.

- The deprecated API named ``pyramid.view.view_execution_permitted``
  was removed.

- The deprecated API named ``pyramid.view.NotFound`` was removed.

- The ``bfgshell`` paster command is now named ``pshell``.

- The Venusian "category" for all built-in Venusian decorators
  (e.g. ``subscriber`` and ``view_config``/``bfg_view``) is now
  ``pyramid`` instead of ``bfg``.

- ``pyramid.renderers.rendered_response`` function removed; use
  ``render_pyramid.renderers.render_to_response`` instead.

- Renderer factories now accept a *renderer info object* rather than an
  absolute resource specification or an absolute path. The object has the
  following attributes: ``name`` (the ``renderer=`` value), ``package`` (the
  'current package' when the renderer configuration statement was found),
  ``type``: the renderer type, ``registry``: the current registry, and
  ``settings``: the deployment settings dictionary.

  Third-party ``repoze.bfg`` renderer implementations that must be ported to
  Pyramid will need to account for this.

  This change was made primarily to support more flexible Mako template
  rendering.

- The presence of the key ``repoze.bfg.message`` in the WSGI environment when
  an exception occurs is now deprecated. Instead, code which relies on this
  environ value should use the ``exception`` attribute of the request
  (e.g. ``request.exception[0]``) to retrieve the message.

- The values ``bfg_localizer`` and ``bfg_locale_name`` kept on the request
  during internationalization for caching purposes were never APIs. These
  however have changed to ``localizer`` and ``locale_name``, respectively.

- The default ``cookie_name`` value of the ``authtktauthenticationpolicy`` ZCML
  now defaults to ``auth_tkt`` (it used to default to ``repoze.bfg.auth_tkt``).

- The default ``cookie_name`` value of the
  ``pyramid.authentication.AuthTktAuthenticationPolicy`` constructor now
  defaults to ``auth_tkt`` (it used to default to ``repoze.bfg.auth_tkt``).

- The ``request_type`` argument to the ``view`` ZCML directive, the
  ``pyramid.configuration.Configurator.add_view`` method, or the
  ``pyramid.view.view_config`` decorator (nee ``bfg_view``) is no longer
  permitted to be one of the strings ``GET``, ``HEAD``, ``PUT``, ``POST`` or
  ``DELETE``, and now must always be an interface. Accepting the
  method-strings as ``request_type`` was a backwards compatibility strategy
  servicing repoze.bfg 1.0 applications. Use the ``request_method``
  parameter instead to specify that a view a string request-method predicate.

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