Removed obsolete bindings.
Removed method for default dispatch value.
Refactored app construction.
Removed obsolete function.
Unified "on-event" arguments.
Attach wiring metadata to the view when wiring it up.
Macro for updating the view's widgets "unwired".

Prevent the transmission of widget events while updating them
programmytically.
Removed obsolete code.
Disable event transmission when updating the view.
The "rendering?" flag doesn't need to be considered any longer.
Removed usages of obsolete "rendering?" flag.
Block the caller when rendering the ui before performing an action.
Replaced the (boolean) locked? flag with a lock level counter.