| ⇢ | A | SlackCommandResponder added |
| ⇢ | A | SlackCommandResponder::getResponse() added | |
| ⇢ | A | SlackCommandResponder::guardAgainstInvalidRequest(... added | |
| ⇢ | A | SlackCommandResponder::determineResponseHandler() added | |
| ⇢ | A | SlackCommandResponder::__construct() added | |
| B | ↗ | A | SlashCommandServiceProvider::boot() improved |