Release procedure

This procedure applies to all versions, only difference in branch names for source and release:

• v1(for EF.Core 2): version1 / release.1
• v3(for EF.Core 3): version3 / release.3
• v5(for EF.Core 5): master / release
• v6(for EF.Core 6): version6 / release.6

1. Check and update if needed release version in azure-pipelines.yml : assemblyVersion and nugetVersion variables
2. Check and update of needed linq2db.EntityFrameworkCore.nuspec dependencies versions
3. Create PR from source to release branch (see branch names above)
4. Merge PR (no-squash)
5. Wait till azure pipelines build and upload nuget package(s). If nuget publishing failed, fix issue and start azure pipelines manually from Azure
6. Update versions (item 1 in this list) to next minor version
7. Create release with tag in release branch