1.0.0-beta.44

• Breaking change: Fixed a bug with Razor layouts and partials and explicit model types. Previously all layouts and partials were assuming
  the model type was an IDocument. This meant that extension methods and other IDocument oriented functionality worked in a layout or partial
  when using the @Model property to access the document, but it also meant they didn't work for alternate models. Layouts and partials are
  supposed to generally handle all model types (since different views can call them), so now the model is dynamic for layouts and partials
  unless explicitly specified. This has the side-effect of making some @Model access like IDocument extension methods that used to work fail.
  If you see "does not contain a definition" error messages in Razor compilation, try changing @Model property access to @Document in your layouts
  and partials, or using an explicit @model directive at the top of the layout pr partial file to explicitly specify the model type for that layout or partial.
• Fixed a bug when changing the CleanMode setting via the bootstrapper.
• Improved compilation failure exception messages for Razor layouts and partials.