updates to core and forms

Rx.NET/Source/System.Reactive.Core/project.json

@@ -114,7 +114,7 @@
                 ]
             },
             "dependencies": {
-                "System.Collections.Concurrent": "4.0.11-rc3-23823",
+                "System.Collections.Concurrent": "4.0.12-rc3-23823",
                 "System.ComponentModel": "4.0.1-rc3-23823",
                 "System.Linq": "4.0.1-rc3-23823",
                 "System.Threading": "4.0.11-rc3-23823",

Rx.NET/Source/System.Reactive.Windows.Forms/project.json

@@ -74,6 +74,11 @@
                     "DESKTOPCLR",
                     "DESKTOPCLR46"
                 ]
+            },
+            "frameworkAssemblies": {
+                "System.Windows": "4.0.0.0",
+                "System.Windows.Forms": "4.0.0.0",
+                "WindowsBase": "4.0.0.0"
             }
         }
     }