Update changelog for 0.26.2-insiders2 (#4648)

Extension/CHANGELOG.md

@@ -1,6 +1,18 @@
 # C/C++ for Visual Studio Code Change Log
 
-## Version 0.26.2-insider: November 12, 2019
+## Version 0.26.2-insiders2: November 21, 2019
+### Enchangements
+* Deferred TU creation until the file is visible in the editor. This avoids the overhead of TU creation when the file is opened by VS Code internally for IntelliSense operations. [4458](https://github.com/microsoft/vscode-cpptools/issues/4458)
+
+### Bug Fixes
+* Fix an issue in which cancellation of Find All References could result in an exception. [2710](https://github.com/microsoft/vscode-cpptools/issues/2710)
+* Fix sort order of files in Find All References and Rename UI. [4615](https://github.com/microsoft/vscode-cpptools/issues/4615) 
+* Fix an issue in which localized Chinese strings would not be displayed on systems with case-sensitive file systems. [4619](https://github.com/microsoft/vscode-cpptools/issues/4619)
+* Fix an issue in 0.26.2-insiders in which memory cleanup in the native IntelliSense process might result in a crash. [4630](https://github.com/microsoft/vscode-cpptools/issues/4630)
+* Fix an issue in which files with an extention of `.H` were not correctly associated with C++. [4632](https://github.com/microsoft/vscode-cpptools/issues/4632)
+* Fix an issue in which -m64 or -m32 were not being passed to gcc, causing the reported system includes and system defines to not match the requested `intelliSenseMode`. [4635](https://github.com/microsoft/vscode-cpptools/issues/4635)
+
+## Version 0.26.2-insiders: November 12, 2019
 ### Enhancements
 * Reworked how a source file is selected for TU creation when opening a header file. [#2856](https://github.com/microsoft/vscode-cpptools/issues/2856)
 * Updated the default value of the `C_Cpp.intelliSenseCachePath` setting to a path under `XDG_CACHE_HOME` on Linux, or `~/Library/Cache` on MacOS. [#3979](https://github.com/microsoft/vscode-cpptools/issues/3979)