Changes to how selector.unify() and @extend combine selectors:
The relative order of pseudo-classes (like :hover) and pseudo-elements
(like ::before) within each original selector is now preserved when
they're combined.
Pseudo selectors are now consistently placed at the end of the combined
selector, regardless of which selector they came from. Previously, this
reordering only applied to pseudo-selectors in the second selector.
Tweak the color transformation matrices for OKLab and OKLCH to match the
newer, more accurate values in the CSS spec.
Fix a slight inaccuracy case when converting to srgb-linear and
display-p3.
Potentially breaking bug fix:math.unit() now wraps multiple denominator
units in parentheses. For example, px/(em*em) instead of px/em*em.
Command-Line Interface
Use @parcel/watcher to watch the filesystem when running from JavaScript and
not using --poll. This should mitigate more frequent failures users have
been seeing since version 4.0.0 of Chokidar, our previous watching tool, was
released.
JS API
Fix SassColor.interpolate() to allow an undefined options parameter, as
the types indicate.
Embedded Sass
Properly pass missing color channel values to and from custom functions.
