NUnit 3.13.1 Hotfix Release

This release addresses several misses with the new FixtureLifeCycle attribute, switches to using SourceLink and NuGet snupkg packages for debugging into NUnit from your unit tests. It also addresses issues with the time format of ignored and explicit tests in the test results file.

You may download NUnit 3.13.1 from Github. See the release notes for more information.