Layer properties - Added drag-editing for number-based properties

Layer properties - Added min and max values
Nuget - Updated Stylet to 1.3.1

src/Artemis.Core/RGB.NET/BitmapBrush.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Artemis.Core.Extensions;
 using Artemis.Core.Plugins.Models;
 using RGB.NET.Core;