basic fixes after rebase + temporarily comment out target frameworks

src/ImageSharp/Formats/PixelTypeInfo.cs

@@ -1,6 +1,10 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using System.Runtime.CompilerServices;
+
+using SixLabors.ImageSharp.PixelFormats;
+
 namespace SixLabors.ImageSharp.Formats
 {
     /// <summary>
@@ -21,5 +25,9 @@ namespace SixLabors.ImageSharp.Formats
         /// Gets color depth, in number of bits per pixel.
         /// </summary>
         public int BitsPerPixel { get; }
+
+        internal static PixelTypeInfo Create<TPixel>()
+            where TPixel : struct, IPixel<TPixel> =>
+            new PixelTypeInfo(Unsafe.SizeOf<TPixel>() * 8);
     }
 }

src/ImageSharp/Image.Decode.cs

@@ -14,7 +14,7 @@ namespace SixLabors.ImageSharp
     /// <content>
     /// Adds static methods allowing the decoding of new images.
     /// </content>
-    public static partial class Image
+    public abstract partial class Image
     {
         /// <summary>
         /// Creates an <see cref="Image{TPixel}"/> instance backed by an uninitialized memory buffer.

src/ImageSharp/Image.FromBytes.cs

@@ -11,7 +11,7 @@ namespace SixLabors.ImageSharp
     /// <content>
     /// Adds static methods allowing the creation of new image from a byte array.
     /// </content>
-    public static partial class Image
+    public abstract partial class Image
     {
         /// <summary>
         /// By reading the header on the provided byte array this calculates the images format.

src/ImageSharp/Image.FromFile.cs

@@ -11,7 +11,7 @@ namespace SixLabors.ImageSharp
     /// <content>
     /// Adds static methods allowing the creation of new image from a given file.
     /// </content>
-    public static partial class Image
+    public abstract partial class Image
     {
         /// <summary>
         /// By reading the header on the provided file this calculates the images mime type.

src/ImageSharp/Image.FromStream.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp
     /// <content>
     /// Adds static methods allowing the creation of new image from a given stream.
     /// </content>
-    public static partial class Image
+    public abstract partial class Image
     {
         /// <summary>
         /// By reading the header on the provided stream this calculates the images mime type.

src/ImageSharp/Image.LoadPixelData.cs

@@ -11,7 +11,7 @@ namespace SixLabors.ImageSharp
     /// <content>
     /// Adds static methods allowing the creation of new image from raw pixel data.
     /// </content>
-    public static partial class Image
+    public abstract partial class Image
     {
         /// <summary>
         /// Create a new instance of the <see cref="Image{TPixel}"/> class from the raw <typeparamref name="TPixel"/> data.

src/ImageSharp/Image.WrapMemory.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp
     /// <content>
     /// Adds static methods allowing wrapping an existing memory area as an image.
     /// </content>
-    public static partial class Image
+    public abstract partial class Image
     {
         /// <summary>
         /// Wraps an existing contiguous memory area of 'width' x 'height' pixels,

src/ImageSharp/ImageSharp.csproj

@@ -10,7 +10,10 @@
 
     <VersionPrefix Condition="$(packageversion) != ''">$(packageversion)</VersionPrefix>
     <VersionPrefix Condition="$(packageversion) == ''">0.0.1</VersionPrefix>
-    <TargetFrameworks>netcoreapp2.1;netstandard1.3;netstandard2.0;net472</TargetFrameworks>
+      
+    <!--<TargetFrameworks>netcoreapp2.1;netstandard1.3;netstandard2.0;net472</TargetFrameworks>-->
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+      
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <AssemblyName>SixLabors.ImageSharp</AssemblyName>

src/ImageSharp/Image{TPixel}.cs

@@ -128,10 +128,10 @@ namespace SixLabors.ImageSharp
         public PixelTypeInfo PixelType { get; }
 
         /// <inheritdoc/>
-        public int Width => this.Frames.RootFrame.Width;
+        public override int Width => this.Frames.RootFrame.Width;
 
         /// <inheritdoc/>
-        public int Height => this.Frames.RootFrame.Height;
+        public override int Height => this.Frames.RootFrame.Height;
 
         /// <inheritdoc/>
         public ImageMetadata Metadata { get; }
@@ -197,7 +197,7 @@ namespace SixLabors.ImageSharp
         }
 
         /// <inheritdoc/>
-        public void Dispose() => this.Frames.Dispose();
+        public override void Dispose() => this.Frames.Dispose();
 
         internal override void AcceptVisitor(IImageVisitor visitor)
         {