I'm having problems with koi8-r encoded messages
Such messages body is presented as ??? chars, instead of real chars.
But subject is decoded as it should and have no problem.
Here is message original: https://gist.github.com/b1rdex/387473a0d4f54e0c060388a7d876a31a
If I manually mb_convert_encoding($messageBody, 'utf-8', 'koi8-r') it converts good.
mb_convert_encoding($messageBody, 'utf-8') fails autodetection and results ???.
Problem is here: https://github.com/tedious/Fetch/blob/9a1b0eb87d343eb0c8c57acb33973c594b8aca8d/src/Fetch/Message.php#L526
Input from email is koi8-r, but mb_list_encodings() has KOI8-R.
I created #207 with fix for this.