You need to read some more te questions the other users here http://www.question2answer.org/qa/57824/is-it-safe-to-switch-to-1-8-yet and here is for now this is not ready by them https://github.com/q2a/question2answer/tree/1.8
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.