* update BenchmarkDotNet to the latest version
* remove BDN feed from the list
* take advantage of a new feature - don't trim columns with content longer than 20 chars
* BenchmarkDotNet.Extensions.Tests should reference BenchmarkDotNet.Extensions, not MicroBenchmarks.csproj
this allows for removing an old VS build order workaround from solution file
* add Reporting.csproj to the MicroBenchmarks.sln since it also needs to be restored
* make the library utils project target .NET Standard 2.0 only
* make the test project target netcoreapp3.0 only which makes VS to recognize it as test project and show all source files
* switch from explicit reference to common.props to implicit Directory.Build.props
* Roslyn benchmarks use internal Roslyn API, which has a strong name so the project needs to be signed..
* pass the path to packages to dotnet build via NuGetPackageRoot
* add ASP.NET Core NuGet feed to the list of feeds (it's now required to use daily bits, https://github.com/dotnet/core/issues/2924)
remove myget feed (it's not needed anymore)
* ignore only one warning, not all of them