Patch for PupNet v1.3 and .NET6

• Version 1.0.2; 2023-04-18

• The pupnet.conf file upgraded to version 1.3.0
• Now builds using .NET6, rather than .NET7 (you can change this in csproj file if needed)
• Reinstated key-press to exit on all deployments

• Version 1.0.1; 2023-03-26

• Programs now asks for key-press only on Windows
• Reports version correctly as 1.0.1

• Version 1.0.0; 2023-03-22

• Initial release
• Reports version as "3.2.1". This was intentional at the time by way of demonstration.