Update changelog for 1.3.1. (#7391)

* Update changelog for 1.3.1.
* Update version.

Author: sean-mcmanus

Extension/CHANGELOG.md

@@ -1,5 +1,12 @@
 # C/C++ for Visual Studio Code Change Log
 
+## Version 1.3.1: April 19, 2021
+### Bug Fixes
+* Fix extension not activating when `/.vscode/c_cpp_properties.json` exists but no C/C++ file is open. [#7344](https://github.com/microsoft/vscode-cpptools/issues/7344)
+* Fix logging for an invalid provider configuration.
+  * Yonggang Luo (@lygstate) [PR #7350](https://github.com/microsoft/vscode-cpptools/pull/7350)
+* Fix extension activation with 32-bit Windows. [#7368](https://github.com/microsoft/vscode-cpptools/issues/7368)
+
 ## Version 1.3.0: April 13, 2021
 ### New Features
 * Add language service support for CUDA.

Extension/package.json

@@ -2,7 +2,7 @@
   "name": "cpptools",
   "displayName": "C/C++",
   "description": "C/C++ IntelliSense, debugging, and code browsing.",
-  "version": "1.3.0-main",
+  "version": "1.3.1-main",
   "publisher": "ms-vscode",
   "icon": "LanguageCCPP_color_128x.png",
   "readme": "README.md",