Add support for .NET 4.5.2

Former-commit-id: ee5f09ffb1e1e1eb96c2334ce017a0d530f8eb78
Former-commit-id: 2a8bc84046fb5f3c6bb2d831a5003a0e4baadd48
Former-commit-id: cf3c96e4547d0c4152fdd017fbc94fe07f85e3b2

src/ImageProcessorCore/project.json

@@ -13,21 +13,30 @@
   },
   "projectUrl": "",
   "licenseUrl": "",
-  "dependencies": {
-    "System.Collections": "4.0.11-beta-23516",
-    "System.Linq": "4.0.1-beta-23516",
-    "System.Threading": "4.0.11-beta-23516",
-    "System.Runtime": "4.0.21-beta-23516",
-    "Microsoft.CSharp": "4.0.1-beta-23516",
-    "Microsoft.NETCore.Portable.Compatibility": "1.0.1-beta-23516",
-    "System.Runtime.Extensions": "4.0.11-beta-23516",
-    "System.Reflection": "4.1.0-beta-23516",
-    "System.IO": "4.0.11-beta-23516",
-    "StyleCop.Analyzers": "1.0.0",
-    "Microsoft.NETCore": "5.0.1-beta-23516",
-    "Microsoft.NETCore.Platforms": "1.0.1-beta-23516"
-  },
   "frameworks": {
-    "dotnet5.5": { }
+    "dotnet5.5": {
+      "dependencies": {
+        "System.Collections": "4.0.11-beta-23516",
+        "System.Linq": "4.0.1-beta-23516",
+        "System.Threading": "4.0.11-beta-23516",
+        "System.Runtime": "4.0.21-beta-23516",
+        "Microsoft.CSharp": "4.0.1-beta-23516",
+        "Microsoft.NETCore.Portable.Compatibility": "1.0.1-beta-23516",
+        "System.Runtime.Extensions": "4.0.11-beta-23516",
+        "System.Reflection": "4.1.0-beta-23516",
+        "System.IO": "4.0.11-beta-23516",
+        "StyleCop.Analyzers": "1.0.0",
+        "Microsoft.NETCore": "5.0.1-beta-23516",
+        "Microsoft.NETCore.Platforms": "1.0.1-beta-23516"
+      }
+    },
+    "net452": {
+      "dependencies": {
+        "System.Numerics.Vectors": "4.0.0"
+      },
+      "frameworkAssemblies": {
+        "System.Runtime": ""
+      }
+    }
   }
 }