Master now targets 12.0

build/SharedVersion.props

@@ -2,7 +2,7 @@
   xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Product>Avalonia</Product>
-    <Version>11.3.999</Version>
+    <Version>12.0.999</Version>
     <ApiCompatVersion>11.1.0</ApiCompatVersion>
     <Authors>Avalonia Team</Authors>
     <Copyright>Copyright 2013-$([System.DateTime]::Now.ToString(`yyyy`)) &#169; The AvaloniaUI Project</Copyright>