Add Version 0.9.7.0 to Changelog.txt.

Author: OpenCppCoverage

Changelog.txt

@@ -1,3 +1,12 @@
+Version 0.9.7.0
+	- All settings are saved by project.
+	- There are two commands:
+		- OpenCppCoverage Settings (Ctrl+R, Ctrl+S): Open the OpenCppCoverage settings window.
+		- Run OpenCppCoverage (Ctrl+R, Ctrl+C): Run OpenCppCoverage without opening the settings window and without displaying the program output.		
+	- Update OpenCppCoverage to the version 0.9.8.0.
+	- Fix an issue when the plugin R Tools is installed: https://github.com/OpenCppCoverage/OpenCppCoveragePlugin/issues/18
+	- Fix "Reset" button when opening the settings window from the project contextual menu.
+	
 Version 0.9.6.1
 	- Remove the reference to PresentationFramework.Aero2 (Not available on Windows 7).
 
@@ -15,4 +24,4 @@ Version 0.9.4.2
 Version 0.9.4.1
 	- Coverage can be directly run from project contextual menu in the window Solution Explorer
 	- Fix the issue Cannot find tool: VCCLCompilerTool for projects generated by CMake
-    - Fix a random issue in Visual Studio 2017. Run Coverage button builds the project but not always run the code coverage
+	- Fix a random issue in Visual Studio 2017. Run Coverage button builds the project but not always run the code coverage