Thanks for the support! It's loading on the iOS Simulator now, but still cannot load the xaml previewer. It says that it couldn't create an instance of SFNavigation drawer because the native class hasn't been loaded.
I'm using Visual Studio 7.0 build 1659 for macOS Sierra 10.12.3
Xamarin.Forms 22.214.171.124 PCL 4.5 - Profile111