message: Use && in the build scripts instead of ; to make it work on cygwin/Windows
diff: "scripts": {
  "run": "electron src/Main.js --dev-tools",
  - "build-all": "npm run npm-install-extension-api ; npm run build ; npm run build-extensions",
  - "build": "npm install extraterm-extension-api ; tsc",
  - "build-extensions": "npm run npm-install-extension-api ; node src/build_scripts/npm_extensions.js build",
  + "build-all": "npm run npm-install-extension-api && npm run build && npm run build-extensions",
  + "build": "npm install extraterm-extension-api && tsc",
  + "build-extensions": "npm run npm-install-extension-api && node src/build_scripts/npm_extensions.js build",
  "build-icons": "node src/extra_icons/build.js",
  - "npm-install-all": "npm install ; npm run npm-install-extensions ; npm run electron-rebuild",
  - "npm-install-extension-api": "npm install extraterm-extension-api ; node src/build_scripts/npm_extensions.js install-extension-api",
  + "npm-install-all": "npm install && npm run npm-install-extensions && npm run electron-rebuild",
  + "npm-install-extension-api": "npm install extraterm-extension-api && node src/build_scripts/npm_extensions.js install-extension-api",
  "npm-install-extensions": "node src/build_scripts/npm_extensions.js install",
  "electron-rebuild": "node ./node_modules/electron-rebuild/lib/src/cli.js -o ptyw.js,font-manager -f -v 1.6.8",
  - "testbulkdomoperation": "npm run build ; nodeunit src/BulkDomOperationTest.js",
  - "testextensionloader": "npm run build ; nodeunit src/ExtensionLoaderTest.js",
  - "testkeybindingmanager": "npm run build ; nodeunit src/KeyBindingManagerTest.js",
  - "testmimetypedetector": "npm run build ; nodeunit src/MimeTypeDetectorTest.js",
  - "testsplitlayout": "npm run build ; nodeunit src/SplitLayoutTest.js",
  + "testbulkdomoperation": "npm run build && nodeunit src/BulkDomOperationTest.js",
  + "testextensionloader": "npm run build && nodeunit src/ExtensionLoaderTest.js",
  + "testkeybindingmanager": "npm run build && nodeunit src/KeyBindingManagerTest.js",
  + "testmimetypedetector": "npm run build && nodeunit src/MimeTypeDetectorTest.js",
  + "testsplitlayout": "npm run build && nodeunit src/SplitLayoutTest.js",
  "typedoc": "node src/build_scripts/prepare_typedoc.js && cd src && typedoc --target ES5 --name Extraterm --mode file --module amd --out typedocs build_tmp",
  "package": "node src/build_scripts/build_packages.js",
  "serve-test": "node src/test/httpserver.js"
  