Provide a time statistic.
Provide a time statistic.

Prints the time elapsed from the end of before_all to the start of
after_all.

lddubeau/wed,lddubeau/wed,slattery/wed,lddubeau/wed,slattery/wed,lddubeau/wed,mangalam-research/wed,mangalam-research/wed,mangalam-research/wed,slattery/wed,mangalam-research/wed