Log Message:
textproc/ruby-libxml: update to 3.1.0

= Release History

== 3.1.0 / 2018-02-03 Charlie Savage

* Fix segmentation fault when adding one node to another node (Charlie Savage)
* Fix deprecated "assert_equal(nil, expected)" calls. #148 and #151. \ 
(utilum)
* Remove assigned but unused variables. #150 (utilum)
* Add Gemfile. #146. (Dorian Marié)
* Remove duplicate hash key in setup.rb. #147. (Dorian Marié)
* Fix gemspec by requiring Date. #149 (utilum)
* Restore default internal encoding after tests are completed. #123 (Charlie Savage)
* Remove duplicate method definitions. #145. (Charlie Savage)
* Remove SchemaElement#minOccurs and SchemaElement#maxOccurs since they actually \ 
did not work (Charlie Savage)
* Rename test files to follow Ruby conventions (Charlie Savage)
* Fix handling of node returned by Reader#expand. #142. (Charlie Savage)
* Add Travis Build support (Charlie Savage)
* Fix Fixnum deprecation (Charlie Savage)
* Cleanup schema code (Charlie Savage)
* Update Visual Studio project to 2017 (Charlie Savage)