Release 2.0.0 The smile extraction can now be done iteratively (`default=2`, use `Config.iterations` to adjust). Usually, the residual offset correction is below 0.1 px in the second iteration. Consequently, we removed the dust flat iteration, as now the first extraction yields correct results. - The property `gain_table` of the `Analyzer` class is now deprecated and replaced by `illumination_pattern`. - The property `pre_flat` of the `Analyzer` now exclusively holds the actual pre flat from the preparation step. The dust flat is now stored in the `dust_flat`property.