marking everything with color tables as obsolete

- this is now a private api
 - may be removed at any time

binding/Binding/SKColorFilter.cs

@@ -7,6 +7,7 @@ namespace SkiaSharp
 	public class SKColorFilter : SKObject
 	{
 		public const int ColorMatrixSize = 20;
+		public const int TableMaxLength = 256;
 
 		[Preserve]
 		internal SKColorFilter(IntPtr handle, bool owns)
@@ -61,21 +62,21 @@ namespace SkiaSharp
 		{
 			if (table == null)
 				throw new ArgumentNullException(nameof(table));
-			if (table.Length != SKColorTable.MaxLength)
-				throw new ArgumentException($"Table must have a length of {SKColorTable.MaxLength}.", nameof(table));
+			if (table.Length != TableMaxLength)
+				throw new ArgumentException($"Table must have a length of {TableMaxLength}.", nameof(table));
 			return GetObject<SKColorFilter>(SkiaApi.sk_colorfilter_new_table(table));
 		}
 
 		public static SKColorFilter CreateTable(byte[] tableA, byte[] tableR, byte[] tableG, byte[] tableB)
 		{
-			if (tableA != null && tableA.Length != SKColorTable.MaxLength)
-				throw new ArgumentException($"Table A must have a length of {SKColorTable.MaxLength}.", nameof(tableA));
-			if (tableR != null && tableR.Length != SKColorTable.MaxLength)
-				throw new ArgumentException($"Table R must have a length of {SKColorTable.MaxLength}.", nameof(tableR));
-			if (tableG != null && tableG.Length != SKColorTable.MaxLength)
-				throw new ArgumentException($"Table G must have a length of {SKColorTable.MaxLength}.", nameof(tableG));
-			if (tableB != null && tableB.Length != SKColorTable.MaxLength)
-				throw new ArgumentException($"Table B must have a length of {SKColorTable.MaxLength}.", nameof(tableB));
+			if (tableA != null && tableA.Length != TableMaxLength)
+				throw new ArgumentException($"Table A must have a length of {TableMaxLength}.", nameof(tableA));
+			if (tableR != null && tableR.Length != TableMaxLength)
+				throw new ArgumentException($"Table R must have a length of {TableMaxLength}.", nameof(tableR));
+			if (tableG != null && tableG.Length != TableMaxLength)
+				throw new ArgumentException($"Table G must have a length of {TableMaxLength}.", nameof(tableG));
+			if (tableB != null && tableB.Length != TableMaxLength)
+				throw new ArgumentException($"Table B must have a length of {TableMaxLength}.", nameof(tableB));
 
 			return GetObject<SKColorFilter>(SkiaApi.sk_colorfilter_new_table_argb(tableA, tableR, tableG, tableB));
 		}

binding/Binding/SKColorTable.cs

@@ -3,6 +3,7 @@ using System.Runtime.InteropServices;
 
 namespace SkiaSharp
 {
+	[Obsolete ("The Index8 color type and color table is no longer supported.")]
 	public class SKColorTable : SKObject
 	{
 		public const int MaxLength = 256;

binding/Binding/SKMaskFilter.cs

@@ -19,7 +19,8 @@ namespace SkiaSharp
 	public class SKMaskFilter : SKObject
 	{
 		private const float BlurSigmaScale = 0.57735f;
-		
+		public const int TableMaxLength = 256;
+
 		[Preserve]
 		internal SKMaskFilter (IntPtr handle, bool owns)
 			: base (handle, owns)
@@ -76,7 +77,7 @@ namespace SkiaSharp
 		{
 			if (table == null)
 				throw new ArgumentNullException(nameof(table));
-			if (table.Length != SKColorTable.MaxLength)
+			if (table.Length != TableMaxLength)
 				throw new ArgumentException("Table must have a length of {SKColorTable.MaxLength}.", nameof(table));
 			return GetObject<SKMaskFilter>(SkiaApi.sk_maskfilter_new_table(table));
 		}

tests/Tests/SKColorTableTest.cs

@@ -28,6 +28,7 @@ namespace SkiaSharp.Tests
 			(SKPMColor)SKColors.Blue
 		};
 
+		[Obsolete]
 		[SkippableFact]
 		public void MembersRetrieveSingleColorWithAlpha()
 		{
@@ -47,6 +48,7 @@ namespace SkiaSharp.Tests
 			Assert.Equal(new SKPMColor(0x33001A00), ct[0]);
 		}
 
+		[Obsolete]
 		[SkippableFact]
 		public void MembersRetrieveColors()
 		{
@@ -65,6 +67,7 @@ namespace SkiaSharp.Tests
 			Assert.Equal(PMColors[5], colorTable[5]);
 		}
 
+		[Obsolete]
 		[SkippableFact]
 		public void IndexerOutOfRangeBelow()
 		{
@@ -76,6 +79,7 @@ namespace SkiaSharp.Tests
 			});
 		}
 
+		[Obsolete]
 		[SkippableFact]
 		public void IndexerOutOfRangeAbove()
 		{

tests/Tests/SKFontManagerTest.cs

@@ -62,6 +62,7 @@ namespace SkiaSharp.Tests
 			Assert.Equal((int)SKFontStyleWeight.Bold, tf.FontWeight);
 		}
 
+		[Obsolete]
 		[SkippableFact]
 		public void TestMatchTypeface()
 		{
@@ -81,6 +82,7 @@ namespace SkiaSharp.Tests
 			Assert.Equal(normal.FamilyName, bold.FamilyName);
 		}
 
+		[Obsolete]
 		[SkippableFact]
 		public void TestMatchTypefaceFromStream()
 		{