Bump Nerdbank.GitVersioning from 3.1.74 to 3.1.91 (reactivemarbles#355)

Bumps [Nerdbank.GitVersioning](https://github.com/dotnet/Nerdbank.GitVersioning) from 3.1.74 to 3.1.91.
- [Release notes](https://github.com/dotnet/Nerdbank.GitVersioning/releases)
- [Commits](https://github.com/dotnet/Nerdbank.GitVersioning/commits)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bump Microsoft.NET.Test.Sdk from 16.5.0 to 16.6.0 (reactivemarbles#349)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 16.5.0 to 16.6.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v16.5.0...v16.6.0)

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Bump Nerdbank.GitVersioning from 3.1.68 to 3.1.74 (reactivemarbles#341)

Bumps [Nerdbank.GitVersioning](https://github.com/dotnet/Nerdbank.GitVersioning) from 3.1.68 to 3.1.74.
- [Release notes](https://github.com/dotnet/Nerdbank.GitVersioning/releases)
- [Commits](dotnet/Nerdbank.GitVersioning@v3.1.68...v3.1.74)

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Bump Microsoft.NET.Test.Sdk from 16.4.0 to 16.5.0 (reactivemarbles#329)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 16.4.0 to 16.5.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v16.4.0...v16.5.0)

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Bump Microsoft.Reactive.Testing from 4.3.1 to 4.3.2 (reactivemarbles#316

)

Bumps [Microsoft.Reactive.Testing](https://github.com/dotnet/reactive) from 4.3.1 to 4.3.2.
- [Release notes](https://github.com/dotnet/reactive/releases)
- [Commits](dotnet/reactive@rxnet-v4.3.1...rxnet-v4.3.2)

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Update version.json

Bump Microsoft.SourceLink.GitHub (reactivemarbles#299)

Bumps [Microsoft.SourceLink.GitHub](https://github.com/dotnet/sourcelink) from 1.0.0-beta2-19367-01 to 1.0.0-beta2-19554-01.
- [Release notes](https://github.com/dotnet/sourcelink/releases)
- [Commits](dotnet/sourcelink@1.0.0-beta2-19367-01...1.0.0-beta2-19554-01)

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Bump Roslynator.Analyzers from 2.1.0 to 2.2.0 (reactivemarbles#296)

Bumps [Roslynator.Analyzers](https://github.com/JosefPihrt/Roslynator) from 2.1.0 to 2.2.0.
- [Release notes](https://github.com/JosefPihrt/Roslynator/releases)
- [Changelog](https://github.com/JosefPihrt/Roslynator/blob/master/ChangeLog.md)
- [Commits](dotnet/roslynator@v2.1.0...v2.2.0)

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Extend descriptions of ObservableChangeSet methods (reactivemarbles#292)

Added description of the special difference between the ToObservableChangeSet and AsObservableChangeSet methods

Fix tests that looks like Assert.True(true) (reactivemarbles#291)