[~TASK] Fluid (ViewHelpers): Fixed BE support of the ViewHelpers cObject, format.crop, uri.resource. Relates to #8947
[~TASK] Fluid (ViewHelpers): Added BE support in the ViewHelpers format.html and image. Relates to #8947

[!!!][+TASK] Fluid (ViewHelpers): The value argument is required again in form.checkbox and form.radio ViewHelpers. This is a breaking change, as the value argument has not been mandatory for a while. But it probably won't break existing templates as omitting the value makes no sense at all. Relates to #8852 (backported from Fluid package r4864)
[+FEATURE] Fluid (Core): implemented overrideArgument() method in AbstractViewHelper to be able to override previously registered arguments in subclasses. This resolves #8852 (backported from Fluid package r4864)
[+BUGFIX] Fluid (Core): Negative numeric values are properly converted to FALSE when used in boolean ViewHelper arguments. This resolves #8893 (backported from Fluid package r4864)

[+BUGFIX] Fluid (ViewHelpers): Reversed the rendering order of header and childNodes in be.container ViewHelper to enable child nodes to modify the pageRenderer. This resolves #8880 (thanks to Andreas Wolf)

[+BUGFIX] Fluid: Replaced SplObjectStorage by Tx_Extbase_Persistence_ObjectStorage to be PHP 5.2-compatible (which ships with a broken implementation of SplObjectStorage)
[!!!][~TASK] Fluid (Core): Renamed ConditionViewHelper and TagBasedViewHelper to Abstract*ViewHelper as per CGL. (backported from Fluid package r4840). To be backwards-compatible, TagBasedViewHelper.php still exists and will write an entry to TYPO3s deprecation log if used. Please adapt your custom ViewHelpers and inherit from AbstractTagBasedViewHelper instead of TagBasedViewHelper. This resolves #8834
[~TASK] Fluid: Marked vfs unit tests to be skipped, as vfs is not part of v4 (yet)

[-TASK] Fluid: Removed @package/@subpackage annotations from all Fluid classes. They have already been removed in FLOW3 packages in r2813.

[-TASK] Fluid: Removed @version annotation from all Fluid classes to ease the backporting process. Relates to #8835 (backported from Fluid package)

[+BUGFIX] Fluid (View): fixed method signature of AbstractTemplateView:getTemplateSource() that was different from the concrete implementation (backported from Fluid package)

[+FEATURE] Fluid: The TemplateVariableContainer now provides a method to retrieve all variables.
[~TASK] Fluid (Core): Introduced a RenderingContextInterface to more cleanly decouple Fluid's rendering context from the TypoScript rendering context. Note that view helpers (and other code) should now refer to that interface instead of the concrete Fluid implementation!
[!!!][+BUGFIX] Fluid (Core): Refactored all Condition-ViewHelpers like f:if, f:security.if* to use a newly created base class F3\Fluid\Core\ViewHelper\ConditionViewHelper. This greatly simplifies the implementation of custom conditions. However, THIS IS A BREAKING CHANGE in case you copied the f:if ViewHelper to create a custom condition ViewHelper, as the internal workings changed. Please check the new f:if ViewHelper to see how to adjust your ViewHelper -- you basically just have to throw away a lot of code. Resolves #8824.
[!!!][-API] Fluid (TemplateView): Removed renderSection() and renderWithLayout() from public API in Tx_Fluid_View_TemplateView, as this should only be called from inside Fluid.
[!!!][TASK] Fluid (ViewHelpers): the <f:section />-ViewHelper now does NOT render itself anymore when encountered in a normal template. Example: Before the change, the template "before <f:section name='...'> middle </f:section> after" was rendered as "before middle after", but now it is only rendered as "before after". Although this is a breaking change, it is quite unlikely that anybody relied on this behavior, as it was inconsistent beforehand.
[TASK] Fluid (TemplateView): Major refactoring of the layout, partial and section rendering mechanism. This also induces a speedup as retundant rendering is eliminated.
[+FEATURE] Fluid (ViewHelpers): The <f:render>-ViewHelper can be now used to render sections in the same partial and template. In these cases, all arguments need to be specified explicitely. Additionally, it can now be used to render a section recursively.
[~TASK] Fluid (Core): Removed some non-API-methods which were never called.

[+FEATURE] Fluid (ViewHelpers): format.crop ViewHelper now supports all features in Backend mode. Relates to #8648

[+TASK] Fluid: Set dependency to Extbase 1.2.x in ext_emconf.php to avoid confusions when working with different versions

  [+FEATURE] Fluid (ViewHelpers): added "selectAllByDefault" argument to form.select ViewHelper. Resolves #4984
  [~TASK] Fluid (Parser): Got rid of the constructor in Parser\Configuration.

[+FEATURE] Fluid (ViewHelpers): Added URI options noCache, noCacheHash, section, format, additionalParams, absolute, addQueryString & argumentsToBeExcludedFromQueryString to FormViewHelper. Resolves #8247
[+BUGFIX] Fluid: Removed a leading backslash in ViewHelperBaseTestcase that led to an error with PHP < 5.3

[+TASK] Fluid: Backported some recent Fluid changes (Note: this is not a complete backport, there are still changes in Fluid Package that are not backported yet):
  [+BUGFIX] Fluid (ViewHelpers): form.select ViewHelper did only check whether "multiple" attribute was set and not whether it was empty or not. Resolves #5879
  [+FEATURE] Fluid (ViewHelpers): GroupedForViewHelper can now group by object. Resolves #7389

[!!!][+TASK] Fluid: Template filenames are expected to be UpperCamelCased from now on. For a grace period there is still a fallback mechanism, so that your old template filenames will still work. But you should rename your templates from "myaction.html" to "MyAction.html" to make sure, that it still works in upcoming versions of Fluid! Resolves #7243

[TASK] Fluid: Replaced some RuntimeExceptions by Tx_Fluid_Core_ViewHelper_Exception_InvalidVariableExceptions in ViewHelperVariableContainer to get green unit tests again
[TASK] Fluid: Added new Exception classes to ext_autoload.php

[+BUGFIX] Fluid (Core): Now, it is possible to "unselect" checkboxes in editing forms; also with multiselect checkboxes. Resolves #5638

[+BUGFIX] Fluid (ViewHelpers): added auto-detection of string-format and propper cropping of HTML. Resolves #7743

[+BUGFIX] Fluid (ViewHelpers): escapeViewHelper now takes encoding of resulting web page into account. Resolves #7292.

[+FEATURE] Fluid (ViewHelpers): The <f:form.error> ViewHelper now supports property paths for the "for"-Argument. Now, one can display only the errors of a given property of an object. Example: In the Blog Example, one could now write <f:form.errors for="blog.title">.

[+TASK] Fluid (ViewHelpers): Improved Documentation in *PageViewHelper. Thanks to Falk Kühnel for the suggestion! Resolves #6297.

[+BUGFIX] Fluid (ViewHelpers): f:link.action can now be used inside f:form without breaking hmac verification. Resolves #6809, Resolves #6808, Resolves #6514. Thanks to Peter Niederlag for providing a patch!

[TASK] Fluid: Backported all changes from Fluid v5 again. This includes mostly some internal restructurings.
[!!!][TASK] Fluid (ViewHelpers): The <f:base> ViewHelper now creates a self-closing tag instead of an opening/closing tag. This is standards-conformant, but will BREAK IE6!!

[+BUGFIX] Fluid (ViewHelpers): Fixing potential XSS Attack if $TYPO3_CONF_VARS['SYS']['sitename'] contains malicious code. Resolves bug #12764 on bugs.typo3.org.