EventGenerator: pass $class to bless
check release() return value for truth not definition
croak when release claim fails
extract _remove_named_claim
make remove_claim private
make add_claim private
lookup_claim dies if it doesn't find a claim
make all_claims private
don't use sprintf in _log_claim_failure
simplify _remove_named_claim
make lookup_claim private
rely on on_*_shutdown callbacks
extract _status_category method