Update changelog for 0.24.0-insiders3. (#3850)

Author: sean-mcmanus

Extension/CHANGELOG.md

@@ -1,7 +1,17 @@
 # C/C++ for Visual Studio Code Change Log
 
+## Version 0.24.0-insiders3: June 27, 2019
+### Enhancements
+* Add validation to the advanced configuration UI settings. [PR #3838](https://github.com/microsoft/vscode-cpptools/pull/3838)
+
+### Bug Fixes
+* Fix IntelliSense process crash on hover with certain arrays. [#3081](https://github.com/Microsoft/vscode-cpptools/issues/3081)
+* Fix crashes after edits, document highlighting, completion, hover, and squiggles. [#3834](https://github.com/microsoft/vscode-cpptools/issues/3834)
+* Fix `envFile` variable substitution. [#3836](https://github.com/microsoft/vscode-cpptools/issues/3836)
+* Fix missing headers popup. [PR #3840](https://github.com/microsoft/vscode-cpptools/pull/3840)
+
 ## Version 0.24.0-insiders2: June 25, 2019
-### Minor Changes
+### Enhancements
 * Change `C_Cpp.clang_format_path` to `machine` scope. [#3774](https://github.com/microsoft/vscode-cpptools/issues/3774)
 * Removed syntactic/lexical colorization from `enhancedColorization`.  [PR #3821](https://github.com/microsoft/vscode-cpptools/pull/3821)
 
@@ -18,7 +28,7 @@
 * Semantic colorization [Documentation](https://github.com/microsoft/vscode-cpptools/blob/master/Documentation/LanguageServer/colorization.md)  [#230](https://github.com/microsoft/vscode-cpptools/issues/230)
 * Add `Rescan Workspace` command. [microsoft/vscode-cpptools-api#11](https://github.com/microsoft/vscode-cpptools-api/issues/11)
 
-### Minor Changes
+### Enhancements
 * Configuration UI editor improvements:  
   * Add list of detected compiler paths. [PR #3708](https://github.com/microsoft/vscode-cpptools/pull/3708)
   * Enable selecting/editing of other configurations and add "Advanced Settings" section. [PR #3732](https://github.com/microsoft/vscode-cpptools/pull/3732)