bug fixes and minor enhancements
- Adds support for merging duplicate simple types. #116 reported by @OlegYch
- Fixes substitution group parsing. #119 reported by @bmjsmith and #133 reported by @psnively
- Fixes
DataRecord equality. #120 reported by @deanhiller
- Fixes package name of wsdl generated file. #117 reported by @hedefalk and @OlegYch
- Fixes handling of empty input messages in wsdl. #122 reported by @hedefalk
- Fixes handling of varg parameters in wsdl generated file. #125 reported by @hedefalk
- Fixes simultaneous use of soap 1.1 and soap 1.2. #130 reported by @ben-manes
- Fixes wsdl protocol package name.
