Merged release_notes with ZTemplates/CHANGES.txt. From now on changes should

be recorded in the Zope/CHANGES.txt.

lib/python/DocumentTemplate/release_notes

-DocumentTemplate releases
-
-  2.2.1
-
-    This is a bug fix release that fixes one bug:
-
-    - DocumentTemplate would attempt to determine whether values 
-      (other than values of known to be uncallable types) were
-      callable by attempting calls.  If any TypeError or AttributeError
-      was raised, then the value was assumed to be uncallable.  This could
-      mask errors in many cases.
-
-      Now, no attempt is made to catch exceptions when calling objects
-      of known to be callable types.  Attribute errors are ignored 
-      only of the object (of InstanceType or some non-standard type)
-      does not have a '__call__' attribute.
-
-  2.2
-
-    This release has a number of new features and bug fixes.
-
-    Features
-
-      - There is a new user's guide in "HTML",
-        http://www.digicool.com/releases/bobo/DocumentTemplate/BoboDTML.html,
-        and "PDF", 
-        http://www.digicool.com/releases/bobo/DocumentTemplate/BoboDTML.pdf,
-        formats with table of contents and index.
-
-	Note that these are not included in the release.
-
-      - AFAIK DocumentTemplate is now thread-safe.
-
-      - There is a new open-source copyright.
-
-      - Import of some modules is delayed providing 30% faster imports.
-
-      - No longer enable the through-the-web-editing interface by default.
-
-      - Added short-hand expr usage.
-
-        For example::
-
-           <!--#some_tag "foo.bar"-->
-
-        is now a short-hand for::
-
-           <!--#some_tag expr="foo.bar"-->
-
-    Bugs fixed
-
-      - Several occurrences of 'from some_module import *' have been 
-        eliminated.
-
-      - Fixed bugs in error reporting.
-
-      - Handle valueless attributes a bit better.
-        In particular, if a valueless parameter is not
-        in the first position, it is not confused for a name,
-
-      - Source files used tabs and spaces for indentation.
-        All tabs have now been removed.
-
-  2.1
-
-    This release has a number of new features and bug fixes.
-
-    Features
-
-      - The rendering code has been rearranged substantially to 
-        improve performance.  Most common rendering operations, like
-        simple-variable and conditional insertion are "inlined" in the
-        main rendering loop.  This avoids many method calls.
-
-        An unfortunate side effect of this change is that error
-        tracebacks are less informative.  This will be addressed in a
-        future and probably the next release.
-
-      - A new tag, 'with', has been added to simplify accessing
-        subobjects. For example, if the variable 'emp' is an instance,
-        the 'with' tag can be used to easily access attributes of 'emp'
-        without using an expression.
-
-      - A new 'raise' tag supports raising exceptions from
-        DocumentTemplates.  A future release will have a try/except tag.
-
-      - The special variable, '_', now provides namespace access in
-        addition to providing access to special "builtin" functions.
-
-      - Security-aware 'getattr' and 'hasattr' methods have been
-        added to the special '_' variable.
-
-      - New 'render' method for '_' to render expressions in much the
-        same way that the 'name' tag attribute automatically renders
-        retrieved objects by calling sub-templates and functions.
-
-    Bugs fixed
-
-      - A bug has been fixed in the handling of 'KeyError' exceptions
-        in rendering of conditional tags, like 'if' and 'unless'.  Now
-        an 'if' tag considers an undefined variable to be "false" as
-        described in the documentation.
-
-  2.0
-
-    The 2.0 release is a major rewrite of the original DocumentTemplate
-    implementation. One of the major implementation changes was to
-    break the implementation into multiple source files which can be
-    used as a ni package.  
-  
-    This release has a number of important features:
-  
-    - Slightly better performance,
-  
-    - Additional tag features, including:
-  
-	  - 'else' tags with 'in' tags,
-  
-	  - 'elif' tags in 'if' tags.
-  
-	  - Ability to use either '/' or 'end' in end tags.  For example,
-	    you can use '/if' or 'endif'.
-  
-	  - Names can be ommitted from end tags.
-  
-    - An expression feature that uses a form of "super safe python"
-      that prevents denial-of-service attacks, which is of concern of 
-      if document templates are edited through the web.
-  
-      A DocumentTemplate subclass can also define a 'validate' method::
-	
-	def validate(self, inst, parent, name, value, md):
-  
-      which validates access to the object given in the
-      argument, 'value' which was accessed by name, 'name', 
-      from the object, 'inst'.  The argument 'parent'
-      is the object that the value actually came from, which
-      is not 'inst' if the value was acquired.  The argument, 'md'
-      is the DocumentTemplate namespace object.
-  
-    - A new 'unless' tag, for inserting text if a condition is false.
-      This replaces the stand-alone 'else' tag, which is deprecated.
-  
-    - A new 'comment' tag.
-  
-      A 'comment' tag is not included in a compiled
-      DocumentTemplate, and is therefore more efficient than::
-  
-	 <!--#if expr="0"-->
-  
-    - A new 'raise' tag for raising exceptions in DocumentTemplates.
-      This is handy for validating inputs.  There will eventually be
-      a 'try' tag.
-  
-    - New 'in' tag variables for getting information about the start and 
-      end indexes of the current batch.
-
-  "Download DocumentTemplate 2.2.1":DocumentTemplate-2.2.1.tar.gz.
-