Windows PowerShell 6.1.0 (64-bit)

What's new in this version:

Engine Updates and Fixes:
- Enable indexing operations on System.Tuple and System.ValueTuple
- Use non-virtual call to invoke 'family or assembly' methods on base class from PowerShell class
- Handle operations with ByRef-like types gracefully in PowerShell
- Make the -settingfile flag on pwsh work for ScriptBlock logging on windows
- Ensure the SSHClientSessionTransportManager stream writer and reader fields are cleared after disposing
- Add LocationChangedAction handler to support the Windows Compatibility module

General Cmdlet Updates and Fixes:
- Fix Set-Service -Status Stopped to stop services with dependencies
- Add the Duration property to HistoryInfo
- Fix null reference in ConvertFrom-Markdown when the markdown content is empty
- Fix file blocking issue with WebCmdlets
- Fix performance issue in WSMan provider by using Refresh() to update the status rather than instantiating ServiceController

Code Cleanup:
- Remove Suspend-Job and Resume-Job cmdlets from compilation on Unix platforms
- Remove extra spaces in error messages in Modules.resx
- Cleanup the platform runtime checks from FileSystemProvider
- Improve code style of Send-MailMessage cmdlet

Tools:
- Add tools for PowerShell performance analysis
- Update code coverage module to download zip files based on job ID

Tests:
- Update test which assumes all previews have the name preview in the version
- Update Pester syntax in Set-Location test
- Add ScriptBlock logging test for Linux and macOS
- Add tests to report when package references are out of date
- Fix ModuleSpecification.Tests.ps1
- Updates Docker package tests

Build and Packaging Improvements:
- Update to the latest package references, dotnet core SDK and framework
- Make the artifact upload only occur for non-PR builds
- Change to not upload artifacts during pull request due to missing VSTS feature
- Remove workaround on VSTS that is no longer needed
- Update docker files to use MCR
- Add symbolic links for libssl and libcrypto to Debian 9 build to make remoting work
- Simplify the StartupInfo type used in Jumplist creation for faster P/Invoke
- Add VSTS CI for Windows
- Update the version of PowerShellGet module to 1.6.7
- update the version of PSReadLine module to 2.0.0-beta3
- Make sure MSI build works for non-preview builds
- Build and package framework dependent package
- Change locale of mdspell to en-US
- Add daily build on non-windows platforms
- Fix Windows MSI to remove the Uninstall shortcut during an uninstall when more than one version is installed
- Fix docker image names for release build

Documentation and Help Content:
- Update the version of .NET Core in docs
- Fix links in README.md
- Add VSTS CI build badges for master branch to README.md
- Add a paragraph in CONTRIBUTING.md about updating files.wxs