2.3.0

• plugin
  • only install necessary depedencies on specific platform.
  • add -c option to show plugin config.
  • support cookie.chrome plugin.
  • supportcookie.firefox plugin.
• docker
  • support running leetcode-cli as docker container for new user's tasting.
  • auto build docker image in Docker Hub.
• UI
  • Add spinner message for long time running works.
• Add logo and updte documents.