I updated wysiwyg-editor plugin with CKEditor v4.6.2 (from v4.4.7) for Q2A v1.7.4 , You can download from here
https://github.com/ProThoughts/wysiwyg-editor-174
If you want to see demo of above plugin then check here. test before you use this plugin on production site.
http://demo.question2answer.info
You need to remove default plugin then add this.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.