v3.1.9

• Feature: Login with Google Account
• Feature: Login with GitHub Account
• Feature: Attach files in Comment
• Improvement: Write comment with CodeMirror Editor
• Improvement: Post comment with Ctrl-Enter
• Improvement: Place the commented page at the beginning of the list
• Improvement: Resolve errors on IE11 (Experimental)
• Support: Migrate to webpack 4
• Support: Upgrade libs
  • eslint
  • react-bootstrap-typeahead
  • react-codemirror2
  • webpack