How to accept special chars in text fields, sp. Long Description?

[ckingbailey]

To commit new content with the GitHub API, the content must be base64-encoded. Non-ASCII characters will cause window.btoa() to throw InvalidCharacterError.

Users will try to use special characters in text fields, especially in long from writing like in Long Description. Should we make the validator disallow non-ASCII characters? Or is there a way to encoded non-ASCII characters and have them still be properly parsed by whatever program is reading the produced YAML file?

[plocket]

I propose for the MVP we disallow non ASCII characters.