Stacktrace improvements in .NET Core 2.1

[Illyriad_Games]

Make stack traces readable dotnet/corefx#24627

---

This is a companion discussion topic for the original entry at https://www.ageofascent.com/2018/01/26/stack-trace-for-exceptions-in-dotnet-core-2.1/

[pessoto]

One more improvement to Stack Traces: https://github.com/dotnet/coreclr/pull/16464