message: moving package.json version back to 2.0.0 for np to do the bump
diff: {
  "name": "polymer-project-config",
  - "version": "2.0.1",
  + "version": "2.0.0",
  "description": "reads, validates, and shapes your polymer.json project configuration",
  "main": "lib/index.js",
  "typings": "lib/index.d.ts",
  