Bump version and CHANGELOG for release

Author: jcreedcmu

extensions/ql-vscode/CHANGELOG.md

@@ -1,6 +1,6 @@
 # CodeQL for Visual Studio Code: Changelog
 
-## [Unreleased]
+## 1.3.0 - 22 June 2020
 
 - Report error when selecting invalid database.
 - Add descriptive message for database archive import failure.

extensions/ql-vscode/package.json

@@ -4,7 +4,7 @@
   "description": "CodeQL for Visual Studio Code",
   "author": "GitHub",
   "private": true,
-  "version": "1.2.3",
+  "version": "1.3.0",
   "publisher": "GitHub",
   "license": "MIT",
   "icon": "media/VS-marketplace-CodeQL-icon.png",