Create a string time stamp based on current detailed date/time
make_time_stamp(suffix = NULL, milliseconds = TRUE)A string formatted as 'YYYYMMDD_HH_MM_SS(_optional MS)(_optional suffix)'
(character(1), default NULL) suffix to append to the time stamp. Useful
when running batches of related models
(logical(1), default TRUE) Should milliseconds be appended to
the timestamp? Useful when launching many models in quick succession.