v3.0.0

Major Changes

• d7ab3f0: Breaking: the React bindings moved to material-theme-builder/react. The
  package root now holds builder alone.

  Migration

  Change the import path for Mcu, useMcu and ExportButton:

  - import { Mcu, useMcu, ExportButton } from "material-theme-builder";
  + import { Mcu, useMcu, ExportButton } from "material-theme-builder/react";

  builder is unchanged — it stays on the root:

  import { builder } from "material-theme-builder"; // unchanged

  Both can be mixed freely; importing from each entry in the same file is fine.
  material-theme-builder/tailwind.css and the CLI are untouched. The root also
  now exports the McuConfig type, which was previously unreachable.

  Why

  2.2.0 made builder callable from a server component, but not free. The root
  entry re-exported the React components, and a framework that splits server and
  client graphs registers every export of a "use client" module it reaches —
  re-export included, and tree-shaking can't undo it. So this:

  import { builder } from "material-theme-builder";
  const css = builder("#5de4c7").toCss();

  still shipped Mcu and the color utilities to the browser in a server
  component that never renders <Mcu>.

  Measured on a Next output: "export" app whose layout does nothing but call
  builder(...).toCss() and render it into a <style>, same app source on both
  sides, only the package shape differing:

  	client chunks (gzip)	chunk files	tonalSpot in them	SSR'd CSS
  2.2.0	198 715	9	present	19 398 chars
  3.0.0	166 679	8	absent	19 398 chars

  −32 036 bytes gzip, byte-identical output. The saving exceeds what
  dist/react.js weighs on its own (26 184 gzip) because dropping it also
  collapses a whole chunk.

  A subpath for the React-free half would have fixed the bundle while leaving the
  default import the expensive one: you'd have to know about client-reference
  registration to reach for it. Putting the framework-agnostic core at the root
  and the bindings behind /react makes the cheap path the default, and matches
  how the ecosystem splits this elsewhere (motion / motion/react,
  @floating-ui/dom / @floating-ui/react).