Update extension version (microsoft#11730)

* Update extension version * Update date in changelog.

Author: karthiknadig

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## 2020.5.0-rc (5 May 2020)
+## 2020.5.0 (12 May 2020)
 
 ### Enhancements
 
@@ -79,7 +79,7 @@
 1. Ensure kernel daemons are disposed correctly when closing notebooks.
  ([#11579](https://github.com/Microsoft/vscode-python/issues/11579))
 1. When VS quits, make sure to save contents of notebook for next reopen.
- ([#11557](https://github.com/Microsoft/vscode-python/issues/11557)) 
+ ([#11557](https://github.com/Microsoft/vscode-python/issues/11557))
 1. Fix scrolling when clicking in the interactive window to not jump around.
  ([#11554](https://github.com/Microsoft/vscode-python/issues/11554))
 

package-lock.json

@@ -2,7 +2,7 @@
  "name": "python",
  "displayName": "Python",
  "description": "Linting, Debugging (multi-threaded, remote), Intellisense, Jupyter Notebooks, code formatting, refactoring, unit tests, snippets, and more.",
- "version": "2020.5.0-rc",
+ "version": "2020.5.0",
  "featureFlags": {
  "usingNewInterpreterStorage": true
  },