Deprecating the lifetime tracking module for the moment...this remains unfinished.  Can find lifetime in post-processing.
CTPy-11 Trait count for population - not just sample:  added trait count for the population, and ensured that we round the
expected stationarity time to the nearest thousand just to make later work with aggregation easier to look it in the data (i.e., rather than having data collection start, say, at
generation 2065, we start at 3000, making it easy to think about intervals).