build: update to net9

Author: TornadoTechnology

.gitignore

@@ -395,4 +395,5 @@ FodyWeavers.xsd
 *.msp
 
 # JetBrains Rider
+.idea/
 *.sln.iml

PACKAGE.md

@@ -0,0 +1,8 @@
+[![Card](https://raw.githubusercontent.com/technologists-team/hypercube-mathematics/main/assets/card.svg)](https://github.com/technologists-team/hypercube-mathematics)
+
+[![C#](https://img.shields.io/badge/c%23-%23239120.svg?style=for-the-badge&logo=c-sharp&logoColor=white)](https://learn.microsoft.com/en-us/dotnet/csharp/)
+[![.Net](https://img.shields.io/badge/.NET-5C2D91?style=for-the-badge&logo=.net&logoColor=white)](https://dotnet.microsoft.com/en-us/download)
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg?style=for-the-badge)](https://opensource.org/licenses/MIT)
+
+## License
+All code for the repository is licensed under [MIT](https://github.com/technologists-team/hypercube-mathematics/blob/main/LICENSE).

global.json

@@ -0,0 +1,7 @@
+{
+  "sdk": {
+    "version": "9.0.304",
+    "rollForward": "latestFeature",
+    "allowPrerelease": false
+  }
+}

src/Hypercube.Mathematics/Hypercube.Mathematics.csproj

@@ -1,12 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
         <SatelliteResourceLanguages>en</SatelliteResourceLanguages>
 
+        <PackageReadmeFile>README.md</PackageReadmeFile>
         <PackageIcon>assets/logo.png</PackageIcon>
 
         <Version>1.0.5</Version>
@@ -15,8 +16,8 @@
         <RepositoryUrl>https://github.com/technologists-team/hypercube-mathematics</RepositoryUrl>
     </PropertyGroup>
 
-    
     <ItemGroup>
+        <None Include="../../PACKAGE.md" Pack="true" PackagePath="README.md" Visible="false"/>
         <None Include="../../LICENSE" Pack="true" PackagePath="" Visible="false"/>
         <None Include="../../assets/logo.png" Pack="true" PackagePath="assets/" Visible="false" />
     </ItemGroup>