New Features

• .NET Core 3.0 support for WPF/Winforms.
• PREVIEW: blazor support. This is likely to change.

Breaking changes

• Rename ISupportsActivation to IActivatableViewModel. Rename IActivatable to IActivatableView.
• Use the .net library version of INotifyPropertyChanging instead of implementing our own interface.
• ReactiveList support is removed.

Changes

• Change most Tuple to ValueTuple's for performance reasons.
• Now using Observable.FromEvent instead of FromEventPattern. Internal testing showed a 2x performance boost.