Quasar

[ENH] Minimum Noise Fraction denoising preprocessor
[ENH] Shift and scale preprocessor
[ENH] Preprocess Spectra: supports categories of preprocessors
[ENH] File reader for 4D mapping stacks from the SGM beamline at CLS
[FIX] Fixes for Peak Fitting (support newer lmfit)
[MNT] Refactor preprocess tests

[FIX] Less memory use with visible images (reimplemented deepcopy)

[FIX] Remove https://polyfill.io/v3/polyfill.min.js?features=es6 (security issue)

[ENH] Spectra: waterfall plot
[ENH] Visualization parameters dialog for Spectra and HyperSpectra
[ENH] Improved the context menu display on Mac
[ENH] A utility function that can easily replace wavenumbers (x)
[ENH] Improve palette support (for dark/light mode)[FIX] Fix opening GSF files in Multifile
[FIX] owinterpolate: Call commit.deferred in line edit callbacks

[FIX] Installation with newer pip/setuptools
[FIX] Fix loading pre-0.6.1 workflows with explicit reader settings
[FIX] PLS: show input info