tag: stuff that needs to be TODOne

- ensure identity of proxy objects by caching them
- add per-attribute validators on server side
- add check for edit timestamp in server
+ update README file
+ POD documentation for JOAP
+ POD documentation for JOAP::NetJabber
+ POD documentation for JOAP::Types
+ POD documentation for JOAP::Descriptors
+ POD documentation for JOAP::Addresses
+ POD documentation for JOAP::Server
+ POD documentation for JOAP::Server::Object
+ POD documentation for JOAP::Server::Class
+ POD documentation for JOAP::Proxy
+ POD documentation for JOAP::Proxy::Error
+ POD documentation for JOAP::Proxy::Class
+ POD documentation for JOAP::Proxy::Server
+ POD documentation for JOAP::Proxy::Instance
+ POD documentation for JOAP::Proxy::Package
+ POD documentation for JOAP::Proxy::Package::Class
+ POD documentation for JOAP::Proxy::Package::Server
+ tool to pre-cook proxy classes
+ actually do logging in server
- allow multiple descriptions based on language