v0.2.6

Changed

• Lowered RMSE-threshold for plot-based tests from 45 to 15 (#344)
• When subsetting to groups, NA isn't automatically added to legend (#344)
• When rendering a single image channel, a colorbar is now shown (#346)
• Removed percentiles_for_norm parameter (#346)
• Changed norm to no longer accept bools, only mpl.colors.Normalise or None (#346)

Fixed

• Filtering with groups now preserves original cmap (#344)
• Non-selected groups are now not shown in na_color (#344)
• Several issues associated with norm and colorbar (#346)

Full Changelog: v0.2.5...v0.2.6