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-Python-Markdown 2.0 Release Notes
-=================================
-
-We are happy to release Python-Markdown 2.0, which has been over a year in the
-making. We have rewritten significant portions of the code, dramatically
-extending the extension API, increased performance, and added numerous
-extensions to the distribution (including an extension that mimics PHP Markdown
-Extra), all while maintaining backward compatibility with the end user API in
-version 1.7.
-
-Python-Markdown supports Python versions 2.3, 2.4, 2.5, and 2.6. We've even
-released a version converted to Python 3.0!
-
-Backwards-incompatible Changes
-------------------------------
-
-While Python-Markdown has experienced numerous internal changes, those changes
-should only affect extension authors. If you have not written your own
-extensions, then you should not need to make any changes to your code.
-However, you may want to ensure that any third party extensions you are using
-are compatible with the new API.
-
-The new extension API is fully documented in [[writing_extensions]]. Below is a
-summary of the significant changes:
-
-* The old home-grown NanoDOM has been replaced with ElementTree. Therefore all
- extensions must use ElementTree rather than the old NanoDOM.
-* The various processors and patterns are now stored with OrderedDicts rather
- than lists. Any code adding processors and/or patterns into Python-Markdown
- will need to be adjusted to use the new API using OrderedDicts.
-* The various types of processors available have been either combined, added,
- or removed. Ensure that your processors match the currently supported types.
-
-What's New in Python-Markdown 2.0
----------------------------------
-
-Thanks to the work of Artem Yunusov as part of GSoC 2008, Python-Markdown uses
-ElementTree internally to build the (X)HTML document from markdown source text.
-This has resolved various issues with the older home-grown NanoDOM and made
-notable increases in performance.
-
-Artem also refactored the Inline Patterns to better support nested patterns
-which has resolved many inconsistencies in Python-Markdown's parsing of the
-markdown syntax.
-
-The core parser had been completely rewritten, increasing performance and, for
-the first time, making it possible to override/add/change the way block level
-content is parsed.
-
-Python-Markdown now parses markdown source text more closely to the other
-popular implementations (Perl, PHP, etc.) than it ever has before. With the
-exception of a few minor insignificant differences, any difference should be
-considered a bug, rather than a limitation of the parser.
-
-The option to return HTML4 output as apposed to XHTML has been added. In
-addition, extensions should be able to easily add additional output formats.
-
-As part of implementing markdown in the Dr. Project project (a Trac fork), among
-other things, David Wolever refactored the "extension" keyword so that it
-accepts either the extension names as strings or instances of extensions. This
-makes it possible to include multiple extensions in a single module.
-
-Numerous extensions are included in the distribution by default. See
-[[available_extensions]] for a complete list.
-
-See the [[change_log]] for a full list of changes.
-