Change `.with_message()` method to take more generic message type (#217)
Change `.with_message()` method to take more generic message type (#217)

Make `with_message` and `with_code` accept more generic message type with ToString trait.
Resolves #156 

Co-authored-by: Johann150 <59ef92dcfd94392447aa9fd9607dfc22532a1f33@protonmail.com>
brendanzab/codespan