configure load time with formatters / reporter
base formatter describes capturing load time
reporting load time in base_text_formatter
Update start & summary notification with load time and use notifications to report load time
capture start time as early as possible
specify behaviour of no loadtime
enforce usage of load time in notifications
alternate implementation providing load_time to legacy formatters
changelog for #1427
Merge pull request #1427 from rspec/report_load_time

Report load time to formatters