Move package to non-preview, add changelog notes (#2510)

Author: rjmholt

CHANGELOG.md

@@ -1,7 +1,42 @@
 # PowerShell Preview Extension Release History
 
 ## v2020.3.0
-### Thursday, March 12, 2020
+### Thursday, March 5, 2020
+
+#### Release of preview work to stable branch
+
+This release, coinciding with the [GA release of PowerShell 7](https://devblogs.microsoft.com/powershell/announcing-PowerShell-7-0/),
+brings a year of work on the PowerShell extension into the stable release.
+The timing of this release is deliberate, since some of the new features
+depend on additions and bugfixes in PowerShell 7,
+while others have a much better experience in PowerShell 7
+thanks to many improvements shipping with it.
+
+Some changes that come to the stable channel in this release include:
+
+- [Integration of PSReadLine into the Integrated Console](https://github.com/PowerShell/vscode-PowerShell/issues/535),
+  enabling syntax highlighting, a better (and more configurable) completion experience,
+  multiline editing and searchable history in the PowerShell Integrated Console
+- Performance and reliability improvements gained
+  by [replacing](https://github.com/PowerShell/PowerShellEditorServices/pull/1056)
+  a hand-rolled Language Server Protocol stack
+  with the LSP server library from the Omnisharp project
+- An [ISE compatibility mode](https://github.com/PowerShell/vscode-powershell/pull/2335)
+  setting to toggle a more ISE-like user experience
+- Debugging improvements in PowerShell 7,
+  [using its new debugging APIs](https://github.com/PowerShell/PowerShellEditorServices/pull/1119)
+- [End of support for PowerShell v3/v4 and .NET 4.5.2](https://github.com/PowerShell/vscode-PowerShell/issues/1310)
+
+After this release, the stable/preview channels will now function as originally intended,
+where the preview channel will be the beta release
+for features to come out in the following stable release.
+
+You may also notice that the history of the changelog has changed.
+For a full list of changes between this release and the previous stable release,
+see [here](https://github.com/PowerShell/vscode-powershell/blob/master/docs/preview_to_stable_changelog.md).
+You can find the changelog from the old stable fork
+[here](https://github.com/PowerShell/vscode-powershell/blob/legacy/1.x/CHANGELOG.md).
+
 #### [vscode-PowerShell](https://github.com/PowerShell/vscode-PowerShell)
 
 - ✨📺 [vscode-PowerShell #2503](https://github.com/PowerShell/vscode-powershell/pull/2503) -

package-lock.json

@@ -1,10 +1,10 @@
 {
-  "name": "powershell-preview",
-  "displayName": "PowerShell Preview",
+  "name": "powershell",
+  "displayName": "PowerShell",
   "version": "2020.3.0",
-  "preview": true,
+  "preview": false,
   "publisher": "ms-vscode",
-  "description": "(Preview) Develop PowerShell scripts in Visual Studio Code!",
+  "description": "Develop PowerShell scripts in Visual Studio Code!",
   "engines": {
     "vscode": "^1.40.0"
   },