Upgrading from 0.7.0 to 1.0.0

The following should help most casual users of the project update their applications:

• The JaasAuthenticationCallbackHandler interface has had it's setAuthentication method removed. The handle method now takes both the Callback and Authentication objects as arguments.
• Added AuthenticationException to the AutenticationEntryPoint.commence method signature.
• Added AccessDeniedException to the SecurityEncorcementFilter.sendAccessDeniedError method signature.