message: Change prepublish script to prepare
  prepublish is deprecated (prepare also runs for git checkouts, and
  lib will need to be built in this case).
diff: "typings": "./lib/index.d.ts",
  "matrix_src_main": "./src/index.js",
  "scripts": {
  - "prepublish": "yarn build",
  + "prepare": "yarn build",
  "i18n": "matrix-gen-i18n",
  "prunei18n": "matrix-prune-i18n",
  "diff-i18n": "cp src/i18n/strings/en_EN.json src/i18n/strings/en_EN_orig.json && ./scripts/gen-i18n.js && node scripts/compare-file.js src/i18n/strings/en_EN_orig.json src/i18n/strings/en_EN.json",
  