message: update changelog & contributing;
diff: }
  },
  "jest": {
  + "testMatch": [ "**/__tests__/**/*.js?(x)", "**/?(*.)+(test).js?(x)" ],
  "moduleNameMapper": {
  "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/tools/assetsTransformer.js",
  "\\.(css|less)$": "<rootDir>/tools/assetsTransformer.js"
  