Emoji domains / punycode unsupported, needs decoded format

[helloyanis]

It seems like emoji domains aren't supported in their current form :

• I have the domain https://🦊💻.ws decoded as https://xn--3s8h30f.ws/ , it shows and works fine on my GitHub page
• Trying to log in on indielogin.com with https://🦊💻.ws returns an error saying it's not a valid URL
• Doing the same with https://xn--3s8h30f.ws/ also fails because the URL on my GitHub profile is not decoded.
• Changing the URL on GitHub to use the decoded version seems to work.

It's too bad to have to edit functional (although unusual) links to have my site work.

Proposed changes :

• Support emoji domains and make them pass verification so they are counted as a correct URL
• Or decode all URLs in the GitHub profile before checking in they match

(Maybe related to #122 ?)