Changes in 4.2.0

* Feature: Extendable admin-side themes. "Classic" and "Remora" theme contained in the core package, user-contributed themes available from http://textgarden.org/layouts/?c=txp-admin
* Feature: Capability for multi-site file system layouts (thanks: Sam Weiss)
* Feature: Role-based permission checks for images, links and files
* Feature: Save various pane toggle states
* Feature: Store author of links and files
* Feature: Automatic adjustment for DST (requires PHP 5.2+, fall back to manual adjustment for servers running older PHPs)
* Feature: Timezone selector in preferences (requires PHP 5.2+, GMT-based selector as a fallback)
* Feature: Default event preference setting (thanks: Mary)
* Fixed: PHP 5.3 compatibility (thanks: Mary)
* Fixed: When a user is deleted, reassign her assets
* Fixed: Tag builders for <txp:category /> and <txp:section />
* Fixed: Bogus "Article tags cannot be used outside an article context" warning  in <txp:else />-branch of <txp:if_keywords>
* Fixed: Removed superflous &amp; encoding for article titles in <txp:recent_comments />
* Fixed: <txp:expires> uses "class" and "wraptag" attributes as intended
* New tag: <txp:link_id /> (thanks: Rick Siletti)
* New tag: <txp:yield />
* Changed: Article timestamp is left untouched for draft, pending, or hidden articles published into the future.
* Changed: <txp:file_download_list /> tag accepts a comma-separated list of file ids in a new "id" attribute (thanks: Rick Silletti)
* Developer: pluggable_ui() serves as a base for custom admin-side user interface panels, see new '*_ui' events below
* Developer: New events 'log_it', 'plugin_lifecycle', 'plugin_prefs', 'txp_die', 'article_ui', 'author_ui', 'category_ui', 'file_ui', 'image_ui', 'link_ui', 'prefs_ui', 'section_ui'
* Developer: Per-user preferences
* Developer: Increased maximum plugin code size to MEDIUMTEXT (16 MiB)
* Developer: Increased maximum preferences value size to TEXT (64 KiB)
* Developer: Core support for unlimited custom fields (thanks: Gerhard Lazu)
* Developer: Thumbnail dimensions are stored in the image table
* Developer: Sending requests to the admin-side with URL parameter "app_mode" set to "async" suppress any default admin-side output. Think AJAX.
* Developer: Cached plugins are loaded in natural sort order.
* Developer: Deprecated cleanfInput(), escape_output(), escape_tags(), getAtt(), gAtt(), and input() functions. These will be removed in next release.
* Developer: Plugins can flag their interest in lifecycle events (install, uninstall, activate, deactivate). @see http://svn.textpattern.com/development/4.x-plugin-template/
* Developer: Optional capability to jump to a plugin's options from the plugin tab. @see http://svn.textpattern.com/development/4.x-plugin-template/
* jQuery 1.3.2

Changes in 4.1.0

* Version 4.1.0 was assigned to the experimental "crockery" branch and never officially released.

Changes in 4.0.8

* Fixed: Current section/category is overwritten in <txp:section_list> and <txp:category_list> (container or form mode)
* Fixed: Registration and notification mails are not sent in PHP safe mode.
* Fixed: Error message upon article save from MySQL 5 in 'strict' mode.
* Fixed: Timeout during "clean URL test" causes WSOD in diagnostics tab.
* Partly fixed: Search result excerpt breaks HTML entities.
* Changed tag: <txp:if_section> without a name attribute is now TRUE on a section page (old behaviour is preserved on upgrades).
* Changed tag: <txp:if_category name=""> is now FALSE on a category page (old behaviour is preserved on upgrades).
* Changed tag: <txp:link_url /> escapes its output.
* Changed tag: <txp:file_download_list /> uses "wraptag", "break", and "label" attributes consistently like other tags.
* Speed: faster plugin loading from the database.
* Diagnostics tab: ignore line endings when checking for modified files and show full paths.
* Pages tab: allow 'default' page to be deleted if not used by a section.
* Developer: Fall back to standard page/permlink behaviour if custom_url_func() returns FALSE.
* Developer: set_pref() accepts an optional "position" parameter.

Changes in 4.0.7

* Parser: full nesting support, allowing unlimited nesting of identical tags.
* Parser: attribute values are parsed when enclosed in single quotes.
* Parser: unquoted attribute values are deprecated and will result in warnings when site status is not set to 'live'. Fix your templates and use double quotes to delimit attribute values.
* Feature: Expiry time for articles, accompanied by related tags
* Speed: various components of the parsing process have been optimized, which compensates the impact of increased parser complexity, resulting in slightly faster parsing speed
* New tags: <txp:expires />, <txp:if_expired>, <txp:if_expires>
* New tag: <txp:if_keywords>
* New tags: <txp:if_first_section>, <txp:if_last_section>
* New tags: <txp:if_first_category>, <txp:if_last_category>
* New tag: <txp:if_variable>
* New tag: <txp:modified />
* New tag: <txp:rsd /> specifies the Really Simple Discovery endpoint for XML-RPC clients
* New tag: <txp:variable />
* Changed tag: <txp:article /> can be used as a container tag
* Changed tag: <txp:article /> allows new attributes 'wraptag' and 'break'
* Changed tag: <txp:article_custom /> can be used as a container tag
* Changed tag: <txp:article_custom /> allows new attributes 'wraptag' and 'break'
* Changed tag: <txp:article_custom /> allows comma separated list for 'id' attributes (this doesn't imply a sort order).
* Changed tag: <txp:category /> applies 'class' attribute to the <a> element when wraptag is empty.
* Changed tag: <txp:category_list /> can be used as a container tag
* Changed tag: <txp:category_list /> accepts a 'children' attribute which limits the list depth to one level below the parent category when set to '0'.
* Changed tag: <txp:file_download_list /> can be used as a container tag
* Changed tag: <txp:if_article_id /> defaults to the current article's id.
* Changed tag: <txp:linklist /> can be used as a container tag
* Changed tag: <txp:recent_comments /> can be used as a container tag
* Changed tag: <txp:recent_comments /> allows new attribute 'offset'
* Changed tag: <txp:search_input /> allows new attribute 'html_id' to set the form's id.
* Changed tag: <txp:section /> applies the 'class' attribute to the <a> element when wraptag is empty.
* Changed tag: <txp:section_list /> can be used as a container tag
* XML-RPC: server now included in main TXP package, disabled by default
* Articles tab: added 'article image' and 'keywords' as search criteria
* Categories tab: categories cannot be accidentally deleted if they are still in use.
* Write tab: Concurrent article edit warning
* Write tab: WYSIWYG preview for draft/pending/hidden articles
* Images tab: added 'alternate text' and 'caption' as search criteria
* Images tab: multi-edit functionality (delete, change category)
* Images tab: setting both thumb width and height to zero or empty values disables auto-thumbnailing
* Links tab: multi-edit functionality (change category)
* Files tab: multi-edit functionality (delete, change category)
* Users tab: multi-edit functionality (delete, reset password, change privilege)
* Users tab: sortable and paginated author list
* Users tab: 'last login' shown in author list
* Plugins tab: User-selectable plugin load order
* Plugins tab: sortable and multi-edit functionality (change order/status, delete)
* More verbose "First Post" article with basic instructions and helpful links.
* Developer: getTree() receives an optional 'table' name, returned array contains 'parent' field.
* Developer: New event 'pretext_set'.
* Developer: new plugin type '3' for admin-only plugins (0=public, 1=admin+public, 2=library)
* Developer: fInput now uses htmlspecialchars on the value parameter (previously only escape_title)
* Developer: pagelinkurl() calls a custom URL handler if present. NB: The custom URL handlers function signature is modified, as an additional flag discerns pagelinks from permlinks.
* Developer: $txpcfg['ftindex_columns'] may contain an arrray of column names defining the fulltext-indexed set. A corresponding MySQL fulltext index must be established previously.
* jQuery 1.2.6
* Ability to connect to the MySQL server through SSL

Changes in 4.0.6

* Security: add missing escape in SQL query (admin side)
* Security: safer use of txp_login cookie + nonce (note: users are logged out after upgrading!)
* Security: fixed XSS vulnerability (thanks DSecRG) and input validation in setup script.
* Security: fixed local file include vulnerability (publisher only) in textpattern/index.php (thanks DSecRG and Victor)
* Security: fixed XSS vulnerability and parameter value overflow in comments preview (thanks DSecRG)
* Security: escape request method as shown on logs tab (thanks Victor)
* Changed tag: <txp:thumbnail /> allows non-JS links to the full-size image
* Changed tag: <txp:article_custom /> allows comma-separated lists for category, section and author attributes (thanks Manfre)
* Changed tag: <txp:linklist /> allows comma-separated list for category attribute
* Changed tag: <txp:file_download_list /> allows comma-separated list for category attribute
* Changed tag: <txp:recent_articles /> allows comma-separated lists for category and section attribute
* Changed tag: <txp:related_articles /> allows comma-separated list for section attribute
* Changed tag: <txp:search_result_excerpt /> allows a custom "break" attribute defaulting to an ellipsis
* Deprecated tag: <txp:sitename /> replaced by <txp:site_name />
* Deprecated tag: <txp:request_uri /> replaced by <txp:page_url />
* Deprecated tag: <txp:s /> replaced by <txp:page_url type="s" />
* Deprecated tag: <txp:c /> replaced by <txp:page_url type="c" />
* Deprecated tag: <txp:q /> replaced by <txp:page_url type="q" />
* Deprecated tag: <txp:id /> replaced by <txp:page_url type="id" />
* Deprecated tag: <txp:pg /> replaced by <txp:page_url type="pg" />
* Deprecated function: escape_output(), use htmlspecialchars() instead
* Deprecated function: gAtt() (and getAtt()), use lAtts() instead
* Deprecated variable: $txpcfg['txpath'], use constant 'txpath' instead
* New tag: <txp:if_search_results> </txp:if_search_results>
* New tag: <txp:search_term />
* New languages: Croatian, Korean, Português (Brasil), Serbian (Latin + Cyrillic), Turkish and Vietnamese (thanks: Filip Baraka, Alexsander Albert Santana, Vladimir Siljkovic, Süleyman Şentürk, Quang Anh Do)
* Developer: using add_privs() for admin-side plugins is now required (used to be optional for publisher-only plugins)
* Developer: dmp() prints debug output to a file in the temporary directory according to preferences. Define 'txpdmpfile' for the file name.
* Developer: Added 'modified' and 'status' to global $thisarticle array
* Developer: Added 'is_logged_in()' function to check on the public side if the visitor is logged in on the admin side
* Speed: less SQL queries (-2 for individual article pages, -1 for other pages)
* Speed: recent_comments tag (thanks Manfre) and admin side comments list only uses 1 query
* Added 'password reset' functionality (with confirmation email) on the login screen
* Update to jQuery 1.2.2 as a default JavaScript library
* Fix textile list incompatibility with PHP 5.2.4 (and higher)
* Fix http-auth when using lighttpd or (mostly) apache+fcgi
* Fix HTTPS protocol check for ISAPI with IIS
* Fix use of article tags on a sticky article page
* Pages, categories and styles cannot be accidentally deleted if they are used on other tabs.
* Corrections in the tag builder
* Refrain from showing sticky articles from non-frontpage sections in search results
* Enable separate search section for messy URL mode
* Many, many minor improvements, see:
  http://dev.textpattern.com/log/development/4.0?action=stop_on_copy&rev=2802&stop_rev=2471

Changes in 4.0.5

* Fixed security issue on public-side (XSS) (thanks zarathu)
* Fixed path disclosure issue (thanks zarathu)
* Search for posted and last modifed dates in article list
* New tag: <txp:hide /> as a container for comments and other internal content
* Changed tags: <txp:comments />, <txp:category_list />, <txp:section_list />
  and <txp:image_index /> support 'sort' attribute
* Distribute jQuery 1.1.2 as a default JavaScript library
* Keep image properties on replacement
* Add 'delete thumbnail' function
* Support back end branding: customizable logo and color bar
* Table sort indicators
* Textile improvements
* Fix non-utf8 mails (iso 8859-1)
* better wrapping in admin-interface to prevent horizontal scrollbar
* Add comment status to comment notification mails
* Fix "infinite" pagination in rare edge cases
* Work around apache bug for file-downloads (in connection with mod_deflate)
* Fix error messages on wrong logins for older mysql versions
* Fix comment spam blacklist false positives (see faq for 4.0.4)
* Fix file_download-tag from showing the same url for different downloads (see faq for 4.0.4)
* Fix disappearing comment preferences in certain ciscumstances (see faq for 4.0.4)
* Fix "active class" in section_list, category_list
* Better cooperation with some proxies (and other HTTP/1.0 clients)
* Smarter comment submit button emphasises preview step
* Optionally hide spam comments in back end list
* Truncate longish article category titles in the write screen
* Handle thumbnailing of larger images
* Better MoveableType import
* Fix some more IIS issues
* New callback event: 'textpattern_end'
* New callback event: 'ping'
* New tag: <txp:article_url_title />
* Changed tag: <txp:permlink /> loses default title attribute
* Changed tag: <txp:file_download_link /> returns filename as an additional URL part
* Many, many minor improvements, see:
  http://dev.textpattern.com/log/development/4.0/?action=stop_on_copy&rev=2443&stop_rev=1963

Changes in 4.0.4:

* RSS 2.0 support
* RSS and Atom feed fixes and improvements
* Many improvements to admin interface XHTML markup and CSS
* Many subtle improvements to the admin UI
* Add automatical detection of and working with SSL
* add nowidow-attribute to article tags
* Adapt navigation-elemts to the user's permissions
* Lots of textile improvements
* Fixed sending Last-Modified header
* Better indexing for faster article list queries
* Update to tagbuilders
* Show (source of) plugin-help before installation
* Improvements in translations (and translateables) (thanks Skubidu and others)
* New translations: Indonesian, Hebrew, Hungarian, Romanian
* Improved handling of comma-separated values in tag attributes
* article, article_custom tags: new 'sort' attribute
* New conditional if_article_id
* author, category, category1, category2 tags: can link to any section by name
* Improved xhtml attributes on many tags (class, rel)
* time and date tags: new attributes for overriding language, GMT
* css, feed_link tags: easier generation of xhtml 'link' tags
* New link tags: link_category, link_date, link_name, link_url
* Navigation tag improvements (new attributes, improved xhtml output)
* Warn if article or comment tags are used in the wrong context
* Improved error checking, reporting and diagnostics
* Stricter 404 checking (missing category, author, messy article ID)
* Simplify and improve comment preview and input form tags
* Improved article load/parse logic on individual article pages
* Workaround some rare FCGI problems with HTTP headers
* Fix some IIS clean URL issues
* Improved multi-edit support on admin pages
* Deprecate old-style PHP tags
* Don't lose your place in admin lists when returning from an edit
* Extra diagnostic info and pre-flight tests
* Better time zone handling
* Remember and automatically reuse thumbnail size settings
* Textile: fix inline class/style/lang
* Warn when article and comment tags are used in the wrong place
* New "if_plugin" conditional checks for an active plugin, with optional version number
* Fix an occasional time zone bug
* Fix 404 errors on clean category URLs
* Add backtrace list to error messages in Debug mode
* Add limit attribute to search_result_excerpt tag
* Add escape and default attributes to custom_field tag
* fix image-upload for outdated gdlib-installations (wet)
* fix label attribute breadcrumb function (richard)
* add if_author, if_article_author (with attribute 'name') (mary)
* allow multiple sections for if_article_section (like for if_section, if_category) (mary)
* display link category's title, rather than name, in the links page. (mary)
* extend article_image tag to optionally display the article image thumbnail. (mary)
* Many minor bugfixes

Changes in 4.0.3:

* fixed 2 potential security holes(detected in internal code review).
  Updade is recommended.
* Textile i18n improvements
* Add a bulk Ban function for comments
* Automatically hide comments when banning an IP
* Fix comments "page by"
* Fix double translated linebreaks in comments.
* Fix nofollow in comments
* Fix preview without textile in certain edge cases
* Seperate hidden comments into unmoderated and spam
* Add bulk changing of comment status (visible, moderated, spam)
* Better error-handling in comments-form when critical fields are missing
  New tag: <txp:comments_error /> (and conditional <txp:if_comments_error >)
  Style-able error-message and form-elements via CSS (class=comments_warn).
* Plugin-Authors: Add callbacks for future spam-plugins [comment.save, comment.form]
* Plugin-Authors: Add getComment() and comment_evaluator for future spam-plugins
* Plugin-Authors: Allow (optionally, transparently) for installing compressed plugins.
* Plugin-Authors: Add window events using addEvent, to allow multiple events loading
                  at window.onload, useful for admin side plugins.
* Improve mysql5-compatibility
* Add comment edit link to notification emails
* Make comment-time format customizable in tag (mary)
* Add offset-attribute to file_download_list (mary)
* Make older, newer and link_to_home work more consistantly with other nav-tags (mary)
* Fix mailto: links
* Fix tag trace output for enclosing tags
* Update comment_count after import
* Add extra info to the tag trace (SQL queries, conditional tag results, page template and form names)

Changes in 4.0.2:

* Fix a bug in 404 handling on some fastcgi servers
* Fix a bug that prevented file_download_list from working properly
* Fix a redirection bug in the comment form
* Fix occasional category URL i18n problems
* Remove extra trailing slash in some breadcrumb links
* Make articles by author work properly
* Make feed_link support section and category correctly
* Add correct content-type to popup comments page
* Fix an obscure feed caching bug
* Fix a possible problem with circular dependencies when loading plugins
* Fix timestamps in Atom feeds
* Fix occasional Atom encoding issues
* UI improvements when creating/copying/deleting styles
* Improve performance of the language loader
* Make date-based permlinks work properly in comment emails
* Better handling of invalid login cookies
* Use page templates for 404 (and other) error pages
* Minor Atom validation improvements
* Improved comment conditionals logic; txp:if_comments now means "if the current article has at least 1 comment"
* Minor performance improvements
* New txp:if_status and txp:page_url tags
* Prevent config.php whitespace from breaking stylesheets
* UI improvements to javascript toggles
* Improved comment input form HTML markup
* Improved txp:section and txp:category tags
* New tags: txp:if_different, txp:if_first_article, txp:if_last_article
* Localize the XML feed link title
* Better encoding of article titles
* Fix rare problems caused by magic_quotes_runtime
* Improved file upload forms
* New language: Latvian
* Support section and category titles in txp:breadcrumb
* Allow decimals=0 in txp:file_download_size tag
* Minor diagnostic info changes
* New labeltag attribute on most list tags
* Restore use_textile preference
* Minor HTML validation fixes
* Developers: new safe_upsert() database function
* Fall back to English if no language data is available
* Support comma-separated names in txp:if_category and txp:if_section
* Identify the offending tag when displaying error messages in templates and forms
* Add include_default attribute to txp:section_list
* Add support for changing status and section on multiple articles at once
* Fix nested category titles in txp:breadcrumb
* Improved comment message markup
* Restore the comments_closed message
* Better handling of per-article Use Textile selection
* Add class attribute to comments_invite for css-classes
* Added 4 attributes to comments_invite: showcount, wraptag, textonly (just the invite-text)
    and showalways (also display on individual article-pages). Example:
    <comments_invite wraptag="p" showcount="0" textonly="1" showalways="1" />
* Support c-style backslash sequences in tag attributes
* Fix some rare bugs in feeds, admin list paging
* Add a pageby attribute to txp:article, for multi-column lists
* Fix txp:link_to_next/prev so they work at the top of a page
* Minor speed improvements, new class and linkclass attributes for txp:breadcrumb tag
* Added txp:comments_preview and txp:if_comments_preview tags. Example usage:
	<txp:if_comments_preview>
	 <div id="cpreview" style="background-color:#FF0"><b>Hello, the following is your preview</b>
	   <txp:comments_preview /><txp:comments_form preview="1" />
	 </div>
	</txp:if_comments_preview>
* Fixed unparsed excerpts in Feeds.
* Textile: smarter handling of relative link and image paths
* Textile: stop footnote links from clashing in article lists
* Add fi_FI locale support

Changes in 4.0.1:

* fixed some serious security issues. Updates are strongly recommended.
* fixed textile problems (missing block-elements in some cases; notextile; span-handling)
* fixed updating of comment_count when deleting comments
* fixed bug in atom feeds (multiple identical excerpts)
* added new permission level (article.edit.own.published, allows you to edit own articles _after_ publishing)
* added very basic 404 support (correct 404 Headers are sent)
* added new languages (?slenska, Suomi, ..(..), ..(..))
* fixed bugs in articles by author (clean and messy urls)
* fixed category_list to use clean urls when appropriate
* fixed installation problems with certain db prefixes by limiting possible prefixes
* fixed timezone issue with ymd permlinks
* fixed GMT formatting of dates
* fixed bugs with i18n-ascii.txt and added a few new items
* added language overrides to dirifying url_titles
* several improvements to url_titles (including not updating them until published)
* several improvements to diagnostics
* added style and class attributes to txp:permlink
* fixed bugs with multibyte strings in some urls
* added contextual information to page title on the admin side
* fixed problems with larger file downloads
* fixed file_download_link with multiple files
* fixed logging of file downloads (only finished downloads are counted; aborts go to normal logs)
* fixed problems with sending mail on some systems
* improvements to older/newer tags
* developers: added more consistent url generation via new pagelinkurl() function
* developers: added callbacks to public side (for example to handle 404s)
if_article_id