Added a plugin model for connections
When URLs are used, it is often necessary to authenticate the urls or set special options. The URLConnectionHandler does this. Added are a number of standard handlers.
Added an isHex method
Throws a more descriptive message when  a final field is encountered in an assignment
Added an isVersionRange method
Documenting the URL Connection Handlers
Resource Repository fixes, doc, and additions.
Extensions
Extensions are stored in the Resource Repository and can be activated with the -extension instruction. They use the bsn/version and are download on demand.
Added a empt Attrs
Was removed, but regretted it.
Private package in API
Added a getSettings method but this
then made Settings part of the public API. So
now uses the registry
Complained about missing package info