v8.0.0-rc.0

This release removes the need for cross-env while updating the standard npm scripts for:

{
  "scripts": {
    "build": "sagui build",
    "dist": "sagui build --optimize",
    "start": "sagui develop --port 3000",
    "test": "npm run test:lint && npm run test:typecheck && npm run test:unit",
    "test:lint": "sagui test:lint",
    "test:typecheck": "sagui test:typecheck",
    "test:unit": "sagui test:unit --coverage",
    "test:unit:watch": "sagui test:unit --watch"
  }
}

If you haven't made any custom changes, upgrading from v7, should be just to point to the newest release. Sagui will take care of updating the scripts for you.

A side-effect of this change is that the build and dist scripts always complile with the NODE_ENV=production.