Update changelog.md. (#2676)

* Update changelog.md.

Extension/CHANGELOG.md

@@ -1,8 +1,9 @@
 # C/C++ for Visual Studio Code Change Log
 
-## Version 0.19.1-insiders2: October 12, 2018
+## Version 0.19.1-insiders2: October 16, 2018
 * Add IntegratedTerminal support for Linux and Windows. [#35](https://github.com/microsoft/vscode-cpptools/issues/35)
 * Unify Visual Studio Code debug protocol parsing by using a shared library with Visual Studio.
+* Fix Intellisense-based `Go to Definition` falling back to the Tag Parser for definitions not in the TU. [#2536](https://github.com/Microsoft/vscode-cpptools/issues/2536)
 * Fix `-isystem` without a space after getting ignored in `compile_comamands.json`. [#2629](https://github.com/Microsoft/vscode-cpptools/issues/2629)
 * Fix Insiders update channel installation failure on Windows/Mac. [#2636](https://github.com/Microsoft/vscode-cpptools/issues/2636)
 * Fix IntelliSense-based `Go to Declaration` falling back to the Tag Parser if the definition is also in the TU. [#2642](https://github.com/Microsoft/vscode-cpptools/issues/2642)