Parses the value and then re-formats it to conform to the formatting options, folding the value if necessary.
| this |
a Header |
| options |
a FormatOptions or null |
| value |
a Sender, From, Reply-To, To, Cc, or Bcc header value |
| charset |
a charset (note: unused) |
|
a newly allocated string containing the reformatted value. |