Upgrade to CSS4J 0.41.2

CSS4J CHANGES
=============

Version 0.41.2
--------------
 * Core:
- NSAC implementation: support nested @media rules.
- DOM impl.: return a null namespace URI for nodes other than elements and 
  attributes.
- CSSOM: set the parent rule in OMCSSGroupingRule.addRule.
- CSSOM: support nested @media rules.
- CSSOM: assign comments preceding rules that are inside grouping rules.
- Initial API for cssText serialization formatting.
- Remove emptyMediaList() from SheetErrorHandler.
- Add toString() to DOMStringListImpl.
- Additional unit test for NSAC implementation.


 * Dom4j module:
- Fix (and tests) for compatibility with dom4j 2.1.1.
- Revert "Maven POM: specify dom4j 2.0.2 for building and testing."
- When adding a rule to a media rule, the parent rule is now already set by 
  core.

CSS4J CHANGES
=============

Version 0.41.1
--------------
 * Core:
- NSAC impl.: recover properly from context error in media rules.
- NSAC implementation: support page rules inside media rules.
- NSAC implementation: when reporting a property declared with no value, report 
  the name of the property.
- DOM implementation: replace a length>0 check by more efficient length!=0
- Add a generic infrastructure for non-CSS presentational hints.
- CSSOM: support @page rules inside @media rules.
- CSSOM: if a media rule is for all media, do not serialize the media in 
  cssText.
- Computed values of "font-family" were actually returning 'used' values. 
  Return the full computed value instead.
- When computing values for several background-* and transition-* properties, 
  'used' values were supplied instead. Return the computed style, and add a 
  BaseCSSStyleDeclaration.computeBoundProperty method to build the used values 
  when needed.
- Use a more modern syntax of rgba(0,0,0/0) for the computed value of 
  'transparent'.
- Add a Javadoc comment about 
  DOMCSSStyleSheetFactory.createCSSDocument(Document).
- Add a sample img element to xhtml sample document.
- New test for strings in embedded style sheets.

 * Dom4j module:
- Embedded styles were retrieved with getTextTrim() which is not CSS-safe. 
  Change it to getText().
- Bug: style coming from presentational attributes like 'width' had a wrong 
  precedence (specificity).
- Add a specific implementation for the <img> element.
- Use core infrastructure for non-CSS presentational hints.

CSS4J CHANGES
=============

Version 0.41
------------
 * Core:
- NSAC implementation: after selector parse/syntax error, parser state was not
  fully reset (bug).
- NSAC implementation: better handling of rule-level syntax errors.
- NSAC implementation: prevent an index out of bounds exception.
- NSAC implementation: set the previous lexical unit in lexical units.
- Refactor: change style sheet factory compliance mode type to enum.
- Refactor: change the type backing the sheet origin from short to byte.
- CSSOM: fix a bug filling calc() subexpressions.
- Ignore superfluous values of 'normal' in the 'font' shorthand.
- Shorthands: size value detection logic now includes functions that have sizes 
  within sub-values.
- Shorthands: fix a bug in the assignment of possible/uncertain color values.
- More robust handling of custom gradient values.
- Initial support for minification of media rules.
- Add a colorSpace attribute to color values, with the color space used to 
  specify it.
- Add a couple more tests about comment parsing.
- Add a few margin builder tests.

 * Dom4j module:
- Adapt to compliance mode type change in core.
- Adapt to sheet origin type change in core.


 * Agent module:
- Adapt to compliance mode type change in core.