31de9e508b
* Replace hyperx Header and Headers with our own implementation * Remove utf8_b * Add RFC 1522 encoder * Fix most tests * Throw away old tests * Header encoding tests * Fix slicing in the middle of a char * Content-Disposition after rebase * Fix the rest of the tests * Fix useless clone clippy warnings * Remove Headers::get_raw_mut * HeaderName::new_from_ascii fallible API * Tidy up HeaderName::new_from_ascii_str * HeaderName::new_from_ascii(_str) tests