v4.0.0

if you are not havily customizing this should be easy upgrade

• breaking: 💥 focusSearchOnOpen prop removed since by default focus will be on search bar
• refactor: ♻️ clean ref based navigation
• refactor: 🏗️ removed goober and replaced it with rollup postcss making this component zero dependency
  • all css classes are now scoped under .rmsc
  • if you are customizing styles / color variables in older version .multi-select and facing issues please replace it with .rmsc .xyz