ManualRegistrationSettings has a affine_90degree_rotation setting that enables manual registration of rotated data, but not flipped data. Zach and I have a dataset with a flipped channel, and I can't see an easy CLI path to flipping the data.

@ieivanov @tayllatheodoro, should there be a similar affine_flip setting for manual registration? It seems like you can use affine_transform_settings.approx_transform for non-manual registration, but it doesn't seem to apply to the manual registration.

Alternative solutions welcome.