message: disable GPU rendering for electron
  GPU rendering on my MBP is somehow slow and clunky.
  Especially as it breaks image-rendering: pixelated CSS rule.  Larger
  than 320 px width canvas --> bilinear filtering!
diff: "scripts": {
  "dev": "yarn react-scripts start",
  "build": "react-scripts build",
  - "start": "concurrently \"cross-env BROWSER=none yarn react-scripts start\" \"wait-on http://localhost:3000 && electron .\"",
  + "start": "concurrently \"cross-env BROWSER=none yarn react-scripts start\" \"wait-on http://localhost:3000 && electron . --disable-gpu\"",
  "debug": "concurrently \"cross-env BROWSER=none yarn react-scripts start\" \"wait-on http://localhost:3000 && electron --remote-debugging-port=9223 .\"",
  "package": "electron-builder --dir",
  "dist-all": "npx build --x64 --macos --win --linux --c.extraMetadata.main=build/electron.js -p never",
  