Summary

• Fix partial effectOptions override — Previously, passing a partial effectOptions prop (e.g. { fov: 120 }) would
  completely discard all other defaults. Defaults are now extracted to a module-level DEFAULT_EFFECT_OPTIONS constant and
  merged at runtime, so users can override individual options without losing the rest.
• Fix shallow merge on nested colors object — The colors property is now deep-merged separately, so passing { colors: {
  roadColor: 0xff0000 } } only overrides roadColor while preserving all other color defaults.
• Fix unnecessary re-renders (TS variants) — The useEffect dependency was mergedOptions, a new object created every
  render, causing the effect to re-run constantly. Now depends on the stable effectOptions prop reference.
• Remove stray console.log — Removed a debug log left inside the render loop (this.options.isHyper).

Performance note

Extracting defaults to a module-level constant (DEFAULT_EFFECT_OPTIONS) avoids recreating the object on every render and
provides a stable reference for useEffect dependencies — but only when no custom prop is passed. When the consumer
passes an inline effectOptions object, it will still be a new reference on every parent re-render, causing the WebGL
scene to be destroyed and recreated. A usage tip was added to the docs reminding consumers to memoize their
effectOptions (via useMemo or a constant) to prevent this.

Bug fixes
Bug: Partial options ignored defaults
Before: <Hyperspeed effectOptions={{ fov: 120 }} /> lost all other defaults
After: All defaults preserved, only fov overridden
────────────────────────────────────────
Bug: Partial colors replaced entire object
Before: { colors: { roadColor: 0xff0000 } } wiped other colors
After: Only roadColor overridden, rest kept
────────────────────────────────────────
Bug: useEffect re-ran every render (TS)
Before: Dependency on mergedOptions (new object each render)
After: Dependency on effectOptions (stable ref)
────────────────────────────────────────
Bug: console.log in render loop
Before: Logged isHyper on every frame
After: Removed
Changed files

Note: A little related to issue #875 (comment), but does't adress this specific issue (it is an overall performance, but not a cleanup of WebGL contexts

Note 2: If you want, I can record a video running Profiler to see the performance boost