Updated .nuspec file

Author: Sergio0694

src/ComputeSharp/ComputeSharp.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>ComputeSharp</id>
-    <version>2.0.0</version>
+    <version>1.4.0</version>
     <title>ComputeSharp</title>
     <authors>Sergio Pedri</authors>
     <owners>Sergio Pedri</owners>
@@ -11,7 +11,7 @@
     <iconUrl>https://i.imgur.com/ntvmD6P.png</iconUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>A .NET Standard 2.1 library to run C# code in parallel on the GPU through DX12 and dynamically generated HLSL compute shaders</description>
-    <releaseNotes>Bug fixes, NuGet updates</releaseNotes>
+    <releaseNotes>New shader syntax, bug fixes, performance improvements</releaseNotes>
     <copyright>Copyright (c) 2020 Sergio Pedri</copyright>
     <tags>dotnet net netcore netstandard csharp library graphics shader hlsl compute gpu</tags>
     <repository type="git" url="https://github.com/Sergio0694/ComputeSharp.git" branch="master" />