operation input parameters list (names and types)
fix to led code run on ruby 1.8 and jruby 1.8; new version adjusted
removed ree support
readded ree
Merge branch 'master' of github.com:hesenrre/wasabi into hesenrre-master

Conflicts:
	lib/wasabi/document.rb
	lib/wasabi/version.rb
	lib/wasabi/xpath_helper.rb
	spec/wasabi/document/multiple_namespaces_spec.rb
updated the changelog [ci skip]