v9.4.4: Release 9 4 4 (#577)

1. Enhancements

• add mobile gesture, mobile: alert
  • Required over https://github.com/appium/appium-xcuitest-driver/releases/tag/v2.28.6
• add travis example for ios #573
• remove some redundant code #572, #571
• update api-demos #569

2. Bug fixes

3. Deprecations