[ANN] nokogiri 1.5.6 Released

nokogiri version 1.5.6 has been released!

* <http://nokogiri.org>
* <http://github.com/sparklemotion/nokogiri/wikis>
* <http://github.com/sparklemotion/nokogiri/tree/master>
* <http://groups.google.com/group/nokogiri-talk>
* <http://github.com/sparklemotion/nokogiri/issues>

Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser. Among Nokogiri's
many features is the ability to search documents via XPath or CSS3
selectors.

XML is like violence - if it doesn’t solve your problems, you are not using
enough of it.

Changes:

## 1.5.6 / 2012-12-19

* Features

  * Improved performance of XML::Document#collect_namespaces. #761 (Thanks,
Juergen Mangler!)
  * New callback SAX::Document#processing_instruction (Thanks, Kitaiti
Makoto!)
  * Node#native_content= allows setting unescaped node contant. #768
  * XPath lookup with namespaces supports symbol keys. #729 (Thanks, Ben
Langfeld.)
  * XML::Node#[]= stringifies values. #729 (Thanks, Ben Langfeld.)
  * bin/nokogiri will process a document from $stdin
  * bin/nokogiri -e will execute a program from the command line
  * bin/nokogiri --version will print the Xerces and NekoHTML versions when
ran with JRuby.

* Bugfixes
  * Nokogiri now detects XSLT transform errors. #731 (Thanks, Justin
Fitzsimmons!)
  * Don't throw an Error when trying to replace top-level text node in
DocumentFragment. #775
  * Raise an ArgumentError if an invalid encoding is passed to the SAX
parser. #756 (Thanks, Bradley Schaefer!)
  * [JRuby] space prior to xml preamble causes nokogiri to fail parsing.
(fixed along with #748) #790
  * [JRuby] Fixed the bug Nokogiri::XML::Node#content inconsistency between
Java and C. #794, #797
  * [JRuby] raises INVALID_CHARACTER_ERR exception when EntityReference
name starts with '#'. #719
  * [JRuby] doesn't coerce namespaces out of strings on a direct subclass
of Node. #715
  * [JRuby] Node#content now renders newlines properly. #737 (Thanks, Piotr
Szmielew!)
  * [JRuby] Unknown namespace are ignore when the recover option is used.
#748
  * [JRuby] XPath queries for namespaces should not throw exceptions when
called twice in a row. #764
  * [JRuby] More consistent (with libxml2) whitespace formatting when
emitting XML. #771
  * [JRuby] namespaced attributes broken when appending raw xml to builder.
#770
  * [JRuby] Nokogiri::XML::Document#wrap raises undefined method `length'
for nil:NilClass when trying to << to a node. #781
  * [JRuby] Fixed "bad file descriptor" bug when closing open file
descriptors. #495
  * [JRuby] JRuby/CRuby incompatibility for attribute decorators. #785
  * [JRuby] Issues parsing valid XML with no internal subset in the DTD.
#547, #811
  * [JRuby] Issues parsing valid node content when it contains colons. #728
  * [JRuby] Correctly parse the doc type of html documents. #733
  * [JRuby] Include dtd in the xml output when a builder is used with
create_internal_subset. #751
  * [JRuby] builder requires textwrappers for valid utf8 in jruby, not in
mri. #784