| ⇢ | A | Header added | |
| ⇢ | A | HeaderKey added | |
| ⇢ | A | HeaderValue added | |
| ⇢ | A | HeaderNotFoundException added | |
| ⇢ | A | HeaderCollection added |
| ⇢ | A | HeaderCollection::getHeader() added | |
| ⇢ | A | HeaderKey::__construct() added | |
| ⇢ | A | HeaderCollection::headerKeyExists() added | |
| ⇢ | A | HeaderCollection::headerExists() added | |
| ⇢ | A | HeaderKey::ensureKey() added | |
| ⇢ | A | ErrorResult::fromPrimitives() added | |
| ⇢ | A | HeaderValue::__construct() added | |
| ⇢ | A | ValidResult::fromPrimitives() added | |
| ⇢ | A | Header::fromPrimitives() added | |
| ⇢ | A | SmokeTestTrait::assertHeaderKeyExists() added | |
| ⋮ | view more | ||