v7.0.0-preview.4 - 09/19/2019

* Engine Updates and Fixes

- Add support to `ActionPreference.Break` to break into debugger when `Debug`, `Error`, `Information`, `Progress`, `Verbose` or `Warning` messages are generated (#8205) (Thanks @KirkMunro!)
- Enable starting control panel add-ins within PowerShell Core without specifying `.CPL` extension. (#9828)

* Performance

- Make `ForEach-Object` faster for its commonly used scenarios (#10454) and fix `ForEach-Object -Parallel` performance problem with many runspaces (#10455)

* Experimental Features

- Update `PSDesiredStateConfiguration` module version to `2.0.3` and bring new tests; enable compilation to MOF on non-Windows and use of Invoke-DSCResource without LCM (#10516)
- Add APIs for breakpoint management in runspaces and enable attach to process without `BreakAll` for PowerShell Editor Services (#10338) (Thanks @KirkMunro!)
- Support [ternary operator](https://github.com/PowerShell/PowerShell-RFC/pull/218) in PowerShell language (#10367)

* General Cmdlet Updates and Fixes

- Add PowerShell Core group policy definitions (#10468)
- Update console host to support `XTPUSHSGR`/`XTPOPSGR` VT control sequences that are used in [composability scenarios](https://github.com/microsoft/terminal/issues/1796). (#10208)
- Add `WorkingDirectory` parameter to `Start-Job` (#10324) (Thanks @davinci26!)
- Remove the event handler that was causing breakpoint changes to be erroneously replicated to the host runspace debugger (#10503) (Thanks @KirkMunro!)
- Replace `api-ms-win-core-job-12-1-0.dll` with `Kernell32.dll` in `Microsoft.PowerShell.Commands.NativeMethods` P/Invoke API(#10417) (Thanks @iSazonov!)
- Fix wrong output for `New-Service` in variable assignment and `-OutVariable` (#10444) (Thanks @kvprasoon!)
- Fix global tool issues around exit code, command line parameters and path with spaces (#10461)
- Fix recursion into OneDrive - change `FindFirstFileEx()` to use `SafeFindHandle` type (#10405)
- Skip auto-loading `PSReadLine` on Windows if the [NVDA screen reader](https://www.nvaccess.org/about-nvda/) is active (#10385)
- Increase built-with-PowerShell module versions to `7.0.0.0` (#10356)
- Add throwing an error in `Add-Type` if a type with the same name already exists (#9609) (Thanks @iSazonov!)

* Code Cleanup

- Convert `ActionPreference.Suspend` enumeration value into a non-supported, reserved state, and remove restriction on using `ActionPreference.Ignore` in preference variables (#10317) (Thanks @KirkMunro!)
- Replace `ArrayList` with `List<T>` to get more readable and reliable code without changing functionality (#10333) (Thanks @iSazonov!)
- Make code style fixes to `TestConnectionCommand` (#10439) (Thanks @vexx32!)
- Cleanup `AutomationEngine` and remove extra `SetSessionStateDrive` method call (#10416) (Thanks @iSazonov!)
- Rename default `ParameterSetName` back to `Delimiter` for `ConvertTo-Csv` and `ConvertFrom-Csv` (#10425)

* Tools

- Update `install-powershell.ps1` to check for already installed daily build (#10489)

* Tests

- Add experimental check to `ForEach-Object -Parallel` tests (#10354) (Thanks @KirkMunro!)
- Update tests for Alpine validation (#10428)

* Build and Packaging Improvements

- Bump `PowerShellGet` version from `2.2` to `2.2.1` (#10382)
- Bump `PackageManagement` version from `1.4.3` to `1.4.4` (#10383)
- Update `README.md` and `metadata.json` for `7.0.0-preview.4` (Internal 10011)
- Upgrade `.Net Core 3.0` version from `Preview 9` to `RC1` (#10552) (Thanks @bergmeister!)
- Fix `ExperimentalFeature` list generation (Internal 9996)
- Bump `PSReadLine` version from `2.0.0-beta4` to `2.0.0-beta5` (#10536)
- Fix release build script to set release tag
- Update version of `Microsoft.PowerShell.Native` to `7.0.0-preview.2` (#10519)
- Upgrade to `Netcoreapp3.0 preview9` (#10484) (Thanks @bergmeister!)
- Make sure the daily coordinated build, knows it is a daily build (#10464)
- Update the combined package build to release the daily builds (#10449)
- Remove appveyor reference (#10445) (Thanks @RDIL!)
- Bump `NJsonSchema` version from `10.0.22` to `10.0.23` (#10421)
- Remove the deletion of `linux-x64` build folder because some dependencies for Alpine need it (#10407)

* Documentation and Help Content

- Update `README.md` and metadata for `v6.1.6` and `v6.2.3` releases (#10523)
- Fix a typo in `README.md` (#10465) (Thanks @vedhasp!)
- Add a reference to `PSKoans` module to Learning Resources documentation (#10369) (Thanks @vexx32!)
- Update `README.md` and `metadata.json` for `7.0.0-preview.3` (#10393)