Also update authenticator if new refresh token was returned

Added TrackMeta and TrackAudio, closes JohnnyCrazy#648

Add TotalTracks to SimpleAlbum.cs and FullAlbum.cs (JohnnyCrazy#597)

Bump Microsoft.NET.Test.Sdk from 16.8.3 to 16.9.1 (JohnnyCrazy#569)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 16.8.3 to 16.9.1.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v16.8.3...v16.9.1)

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bump to 6.0.0

Use 200 as success code in SaveAlbum/SaveTracks/SaveShows, closes Joh…

…nnyCrazy#496

prepare last last beta - beta.11

prepare last beta - beta.10

prepare beta 9

prepare beta 8