Removed all references to the deprecated api.dydra.com hostname.
Implemented the Dydra.getAuthenticatedURL(Session, String) method.
Upgraded all dependencies to their respective latest stable releases.
Implemented the Repository#prepareUpdate() method.
Imported doc/examples/sdk-jena/update.java as a trivial example of
how to execute SPARQL 1.1 Update operations on a Dydra repository
using the SDK's convenience wrappers for Jena 2.10.