Project does not build

[mrtank]

I tried to check out master, and build. But there are multiple problems that I encounter.

Some minor problem, that in VS2015 it didn't support to have same name of type Tree =... and module Tree..., type Forest and module Forest. All handled by using VS2017. But the next problem is blocking>

The actual Gjallarhorn version depends on FSharp.Core (>= 4.3.4), but Gjallarhorn.Bindable depends on FSharp.Core (= 4.0.0.1). If I downgrade everything to bare minimum, it will throw The module/namespace 'Gjallarhorn.Bindable.Framework' from compilation unit 'Gjallarhorn.Bindable' did not contain the namespace, module or type 'ApplicationCore``3'

<Reference Include="FSharp.Core">
  <HintPath>..\packages\FSharp.Core.4.0.0.1\lib\net40\FSharp.Core.dll</HintPath>
</Reference>
<Reference Include="FsXaml.Wpf">
  <HintPath>..\packages\FsXaml.Wpf.3.1.6\lib\net45\FsXaml.Wpf.dll</HintPath>
</Reference>
<Reference Include="FsXaml.Wpf.Blend">
  <HintPath>..\packages\FsXaml.Wpf.Blend.3.1.6\lib\net45\FsXaml.Wpf.Blend.dll</HintPath>
</Reference>
<Reference Include="FsXaml.Wpf.TypeProvider">
  <HintPath>..\packages\FsXaml.Wpf.3.1.6\lib\net45\FsXaml.Wpf.TypeProvider.dll</HintPath>
</Reference>
<Reference Include="Gjallarhorn">
  <HintPath>..\packages\Gjallarhorn.0.11.0\lib\portable-net45+win8+wp8+wpa81\Gjallarhorn.dll</HintPath>
</Reference>
<Reference Include="Gjallarhorn.Bindable">
  <HintPath>..\packages\Gjallarhorn.Bindable.0.11.0\lib\portable-net45+win8+wp8+wpa81\Gjallarhorn.Bindable.dll</HintPath>
</Reference>
<Reference Include="Gjallarhorn.Bindable.Wpf">
  <HintPath>..\packages\Gjallarhorn.Bindable.Wpf.0.11.0\lib\net45\Gjallarhorn.Bindable.Wpf.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Expression.Interactions">
  <HintPath>..\packages\System.Windows.Interactivity.WPF.2.0.20525\lib\net40\Microsoft.Expression.Interactions.dll</HintPath>
  <Private>True</Private>
</Reference>=