MageCoven

Double width characters, such as あ, are treated as a normal character when positioning the arrow for indicating where the strings differ. An example: ``` ↓ (pos 8) Expected: åöäじゃぱねせ...

Added the status classes Informational (1xx), Successful (2xx), Redirection (3xx), ClientError (4xx) and ServerError (5xx) as unions of all status codes in their respective class according to the [ietf rfc7231](https://tools.ietf.org/html/rfc7231)...