No ValueError when generated beats are all before min_beat_time - instead, just return 0 for all metrics.
No ValueError when generated beats are all before min_beat_time - instead, just return 0 for all metrics.

mrgloom/mir_eval,bmcfee/mir_eval,urinieto/mir_eval,bmcfee/mir_eval,craffel/mir_eval,rabitt/mir_eval,rabitt/mir_eval,craffel/mir_eval,faroit/mir_eval,mrgloom/mir_eval,faroit/mir_eval,urinieto/mir_eval