XLabs errors on Windows Phone project

So I've got an empty xamarin.forms project which works fine on iOS, Android and WinPhone, but I need XLabs HybridWebView,, and after only adding XLabs.Forms from Nuget on WinPhone project these errors started to show:

Error       Type universe cannot resolve assembly: Xamarin.Forms.Platform.WP8, Version=1.4.0.0, Culture=neutral, PublicKeyToken=null.
Error       Cannot resolve Assembly or Windows Metadata file 'Xamarin.Forms.Platform.WP8.dll'
Error       The type "WindowsPhonePage" is abstract and must include an explicit value. 

Can someone tell me what is going on?

I have:
VS2015
XLabs 2.0.5713-pre4
Xamarin.Forms 1.4.4.6392 (latest stable)

Here is the project: https://www.dropbox.com/s/xfrkkg45759sera/BlankWinPhone.zip?dl=0