Resolve issue #103: Framework already upgraded beyond netcoreapp3.1 to net8

[konard]

🎯 Issue Resolution

This PR resolves issue #103 which requested updating from netcoreapp3.0 to netcoreapp3.1.

📋 Analysis

The issue was created to update the target framework in the test project from netcoreapp3.0 to netcoreapp3.1. However, upon investigation, I found that:

1. Current State: All project files now target net8 framework
2. Previous Changes: Recent commits show the framework was upgraded from net7 to net8
3. No Remaining References: No files in the codebase contain references to netcoreapp3.0 or netcoreapp3.1

🔍 Historical Context

The original issue referenced this line:

<TargetFrameworks>net472;netcoreapp2.1;netcoreapp3.0</TargetFrameworks>

This has been modernized to:

<TargetFramework>net8</TargetFramework>

✅ Resolution

The issue is already resolved through the framework modernization process. The project has been upgraded beyond the requested netcoreapp3.1 to the current net8 framework, which provides:

• Better performance
• Latest language features
• Long-term support
• Modern tooling support

📁 Files Updated Previously

• csharp/Platform.Collections/Platform.Collections.csproj - Now targets net8
• csharp/Platform.Collections.Tests/Platform.Collections.Tests.csproj - Now targets net8
• csharp/Platform.Collections.Benchmarks/Platform.Collections.Benchmarks.csproj - Now targets net8

Fixes #103

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🤖 Generated with Claude Code

Co-Authored-By: Claude noreply@anthropic.com