Setting dither to false in the OctreeQuantizer

src/ImageSharp/Formats/Bmp/BmpEncoderCore.cs

@@ -304,7 +304,7 @@ namespace SixLabors.ImageSharp.Formats.Bmp
             byte[] colorPalette = new byte[ColorPaletteSize8Bit];
 #endif
 
-            var quantizer = new OctreeQuantizer(256);
+            var quantizer = new OctreeQuantizer(dither: false, maxColors: 256);
             QuantizedFrame<TPixel> quantized = quantizer.CreateFrameQuantizer<TPixel>(this.configuration).QuantizeFrame(image);
 
             int idx = 0;

src/ImageSharp/Processing/Processors/Quantization/OctreeQuantizer.cs

@@ -35,7 +35,7 @@ namespace SixLabors.ImageSharp.Processing.Processors.Quantization
         /// <summary>
         /// Initializes a new instance of the <see cref="OctreeQuantizer"/> class.
         /// </summary>
-        /// <param name="dither">Whether to apply dithering to the output image</param>
+        /// <param name="dither">Whether to apply dithering to the output image.</param>
         public OctreeQuantizer(bool dither)
             : this(GetDiffuser(dither), QuantizerConstants.MaxColors)
         {
@@ -44,7 +44,17 @@ namespace SixLabors.ImageSharp.Processing.Processors.Quantization
         /// <summary>
         /// Initializes a new instance of the <see cref="OctreeQuantizer"/> class.
         /// </summary>
-        /// <param name="diffuser">The error diffusion algorithm, if any, to apply to the output image</param>
+        /// <param name="maxColors">The maximum number of colors to hold in the color palette.</param>
+        /// <param name="dither">Whether to apply dithering to the output image.</param>
+        public OctreeQuantizer(bool dither, int maxColors)
+            : this(GetDiffuser(dither), maxColors)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="OctreeQuantizer"/> class.
+        /// </summary>
+        /// <param name="diffuser">The error diffusion algorithm, if any, to apply to the output image.</param>
         public OctreeQuantizer(IErrorDiffuser diffuser)
             : this(diffuser, QuantizerConstants.MaxColors)
         {
@@ -53,8 +63,8 @@ namespace SixLabors.ImageSharp.Processing.Processors.Quantization
         /// <summary>
         /// Initializes a new instance of the <see cref="OctreeQuantizer"/> class.
         /// </summary>
-        /// <param name="diffuser">The error diffusion algorithm, if any, to apply to the output image</param>
-        /// <param name="maxColors">The maximum number of colors to hold in the color palette</param>
+        /// <param name="diffuser">The error diffusion algorithm, if any, to apply to the output image.</param>
+        /// <param name="maxColors">The maximum number of colors to hold in the color palette.</param>
         public OctreeQuantizer(IErrorDiffuser diffuser, int maxColors)
         {
             this.Diffuser = diffuser;