Adding ability to inspect and clear soap headers.
Merge pull request #282 from ankush-garg/errJsAttach

Adding ability to inspect and clear soap headers
0.4.2 release
Fix for #133 - inheritance support.
Merge pull request #296 from ankush-garg/errJsAttach

Fix for #133 - inheritance support.
Make sure callback is done asynchronously for a cached wsdl
Merge pull request #298 from raymondfeng/master

Make sure callback is done asynchronously for a cached wsdl