Prototype Blog: Release candidate 3

Here’s what’s new:

Element.addMethods now again adds the methods to Element. [#7888]
Form.request also works with forms containing an input element with name="action". [#8063]
Safari no longer crashes on String#stripScripts and extractScripts with large <script>.
Form.disable works again on non-form elements. [#6887]
String#endsWith now always returns the correct value. [#7822]
Ajax responses with no Content-type header are no longer evaluated. [#7827]
Hash#toQueryString again serializes undefined values to ensure consitency with String#toQueryParams. [#7806]
Various fixes of the $$() utility. [#7873], [#7901]

Ajax.Requests now supports per-request onCreate callbacks. [#8011]
JSON strings are automatically stripped of their security delimiters (if present) before eval. More details on this security issue here (PDF document). [#7910]
all toJSON methods now generate YAML-loadable JSON. [#7883]
Event.element now returns an extended element. [#7870]
Linefeed normalisation is now prevented in IE on String#escapeHTML and String#unescapeHTML for consistency with other browsers.
Added a new Element.childElements method (shorter alias of Element.immediateDescendants).
Added a new Element.firstDescendant method (same as using Element.down with no arguments).

Faster $$() utility and Element.getElemementsBySelector method. [#7873], [#7901]
Optimized Element.next, Element.down, Element.up and Element.previous DOM methods. [#7848]
Speed improvements of String#escapeHTML and String#unescapeHTML in IE and Safari.

If all goes well, this will be the last release candidate before 1.5.1 final, so we’re counting on your zealous testing and bug reporting.