Kenneth Hsu
e964072690
This updates all projects to target .NET Framework 4.7.1. The TencentCOS and Tardigrade backends depend on .NET Standard 2.0. When a .NET Framework prior to 4.7.1 is targeted, the system cannot be sure that all the dependencies exist, so it copies all dependent assemblies to the output directory. This causes many assemblies from the System namespace to become bundled in the release. https://stackoverflow.com/a/48875007 We had previously attempted to make individual projects target 4.7.1 (see pull request #4242), but this can cause compatibility issues when 4.6.2 projects depend on 4.7.1. projects. This will require Mono 5.10.0 or greater (previously, we required 5.0.0 or greater). https://www.mono-project.com/docs/about-mono/releases/5.10.0/#class-libraries This fixes issue #4234.