Merge pull request #56 from mikey179/master

add SecureString support
Merge pull request #57 from mikey179/master

work for 3.0.0
Merge pull request #58 from mikey179/master

request broker annotation `@Request[OneOf]` now throws an exception when list of allowed values is missing in annotation
change stubbles\input\web\WebRequest::protocolVersion() to always report the protocol version when it can be detected, not just supported ones