- Added 'OverlayPlots' param to overlay timepoint groups on a single graph with auto-legends.
- Added 'ShadeTrans' param to control SEM/CI shading transparency.
- Updated gratings logic to support both 'StimulusID' and 'GratingID'.
- Updated mismatch logic to support both 'PerturbationLFM' and 'Perturbation'.
