Make bias adjustment configurable
We need different forms of bias adjustment. For example, the adjustment may be applied at the daily mean level or after time scale separation at the multi-day and anomaly level. It may involve empirical or parametric adjustment methods.
As such, it is is necessary to be able to control which exact adjustment should be carried out in any given run.
This requirement comes in two parts: First, the code must be flexible enough to allow different approaches; second, the user must be able to communicate this in some form, eg with command-line parameters or a configuration file.