Event service interfaces and implementation.
The event service consists of the client-side API and the server-side
system.
The-client side API {@link fuegocore.notify.core.EventBase}
consists of the session management, and pub/sub invocations.
The access server {@link fuegocore.notify.core.server} provides the
server-side functionality for sessions and pub/sub operations.
The event channel server and event channels provide logging and
a meeting point for publishers and subscribers of information
{@link fuegocore.notify.core.channel}. In addition, the Filter
Service {@link fuegocore.notify.core.filter} is used by both the
client-side system and the server-side system for event matching and filter merging.
The architecture of the event service implementation is described in
the project implementation document. Examples and test applications
can be found at the {@link fuegocore.notify.test}.