Give a clear 404 on all URLs that don't exist, currently they silently redirect to the home page

E.g.:

• for agular currently they silently redirect to the home page: https://demo.realworld.io/#/editor/ is the editor, but if I hack it: https://demo.realworld.io/#/editorasdfqwer/ it just immediately redirects to: https://demo.realworld.io/#/ It would be better to have a clear 404 this page does not exist error instead
• for https://github.com/gothinkster/react-redux-realworld-example-app at 9186292054dc37567e707602a15a0884d6bdae35 , http://localhost:4101/editorasdf just gives a blank page without redirects. I'm glad react doesn't use the terrible /#/ thing however!

I often type stuff wrong on the address bar, or I delete my dev database and articles are gone, and I'm left wondering what's up :-)