A MangaDex API wrapper for Dart/Flutter

Some API endpoints have changed relationships and now throw errors, this will be fixed on my end soon! (https://canary.discord.com/channels/833598287574990850/850131706022461440/886592857446694922)

I specified what I tried to do in Issues.

What's left to do is testing, I did so manually but it'd be wise to make an automated test. Every other automated test worked.

I basically made the ChapterId a nullabe property, added a bunch of other nullabe properties and then I map them to a QueryParams just to get it to build a nice String.

Since I changed the type of res from dynamic to the http.Response (You were already using the http.Response type under the hood anyways), I had to add a "!" to tell Dart that we know as a fact that exists,

Snippet ahead.

if (res.statusCode == 403 && res.headers['X-Captcha-Sitekey'] != null) {
      throw CaptchaException(res.headers['X-Captcha-Sitekey']!,
          message:
              'You need to solve a captcha, check `.sitekey` for the sitekey.');
    }
}

Seems like the "chapters" route is not entirely ready for use. The API route offers this.

The implementation is something like this.

If you were to solve the problem, how'd you go arround? Make the ID in chapter optional or nullable, and add more properties, such as volume, chapter, and mangaTitle.