Set TimeSeries.t0 instead of TimeSeriesepoch to save precision
This PR modifies a couple of calls in TimeSeries methods to set t0 instead of epoch, removing any calls to Time which can introduce precision issues with year-2016 GPS floats.
This PR modifies a couple of calls in TimeSeries methods to set t0 instead of epoch, removing any calls to Time which can introduce precision issues with year-2016 GPS floats.