Artem

Results 3 issues of Artem

do-not-merge
Change sent to author
xamarin/prod
xamarin-android/tech

- for fluent style SDKs, new items are added with a `Post` method, there is no `Add` method - `Header()` function -> `Headers` collection - a list of `QueryOptions` objects...

I added support for Android and iOS. I didn't add new target frameworks for the platforms, because these platforms can use .NET Standard 2.0.