Feature: Change the type of GridView.DataStore to IEnumerable

[Berrysoft]

I see that someone has created an issue two years ago, and I think it is important, because it is difficult to convert a List<int> or ObservableCollection<int> to IEnumerable<object>, but they are easy to be converted to IEnumerable. If the type of GridView.DataStore is changed to IEnumerable, we can remove the limitation of where T: class in GridView<T>, and it is obviously more convenient.

[Itaros]

What are downsides of IEnumerable over IEnumerable<T>? Are they negligible for such transition?

[Berrysoft]

Expect that it is a broken change, I don't see any downsides. It doesn't require programmers to change the code, because if the instance of a type is assignable to IEnumerable<obejct>, it is certainly assignable to IEnumerable. By the way, WPF, UWP and Avalonia all use IEnumerable.