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Description
Is there anything against deprecating the BeamformerTimeSq class and all other *Sq classes in acoular.tbeamform?
The result functions have already been merged anyway to a single function in BeamformerTime and BeamformerTimeTraj and we currently have 4 extra classes implementing the sq logic.
Instead, we could introduce a squared_output / squared_result or simply sq attribute, which is False by default. r_diag would then only be able to be used when sq=True.
The only thing I am afraid of is that people think they apply "diagonal removal" but don't set the squared attribute to True. We could avoid this by changing the default value of r_diag to False and by printing a warning if r_diag==True and sq==False.