Version 1.2.7:

1. In JavaScriptEngineSwitcher.ConfigurationIntelliSense updated definitions for configuration settings of V8 JavaScript engine;
2. In JavaScriptEngineSwitcher.V8 added support of Microsoft ClearScript.V8 version 5.4.2 (support of V8 version 4.2.77.18).

Version 1.2.6:

1. In JavaScriptEngineSwitcher.Msie added support of MSIE JavaScript Engine version 1.5.3;
2. In JavaScriptEngineSwitcher.V8 fixed a bug Taritsyn#12 “V8 config can be null”;
3. In JavaScriptEngineSwitcher.Jint added support of Jint version of April 30, 2015.

Version 1.2.5:

1. In JavaScriptEngineSwitcher.ConfigurationIntelliSense updated definitions for configuration settings of Jint JavaScript engine;
2. In JavaScriptEngineSwitcher.Msie added support of MSIE JavaScript Engine version 1.5.2;
3. In JavaScriptEngineSwitcher.Jint:
	3.1. Jint was updated to version of March 29, 2015;
	3.2. In configuration settings of Jint JavaScript engine was changed default value of `MaxRecursionDepth` property from `20678` to `-1`.

Version 1.2.4:

1. In `JsEngineBase` class all public non-abstract methods are now is virtual;
2. In JavaScriptEngineSwitcher.ConfigurationIntelliSense added definitions for configuration settings of Jurassic and Jint JavaScript engines;
3. In JavaScriptEngineSwitcher.Jurassic added the ability to change configuration settings of Jurassic JavaScript engine: `EnableDebugging` (default `false`), `EnableIlAnalysis` (default `false`) and `StrictMode` (default `false`);
4. In JavaScriptEngineSwitcher.Jint added the ability to change configuration settings of Jint JavaScript engine: `EnableDebugging` (default `false`), `MaxRecursionDepth` (default `20678`), `MaxStatements` (default `0`), `StrictMode` (default `false`) and `Timeout` (default `0`).

Version 1.2.3:

1. In JavaScriptEngineSwitcher.ConfigurationIntelliSense added definitions for configuration settings of V8 JavaScript engine;
2. In JavaScriptEngineSwitcher.V8:
	2.1. Added support of Microsoft ClearScript.V8 version 5.4.1 (support of V8 version 3.30.33.16);
	2.2. Added the ability to change configuration settings of V8 JavaScript engine: `EnableDebugging` (default `false`), `DebugPort` (default `9222`), `DisableGlobalMembers` (default `false`), `MaxNewSpaceSize` (default `0`), `MaxOldSpaceSize` (default `0`) and `MaxExecutableSize` (default `0`);
3. In JavaScriptEngineSwitcher.Jint added support of Jint version of February 14, 2015.

Version 1.2.2:

In JavaScriptEngineSwitcher.Msie added support of MSIE JavaScript Engine version 1.5.1.

Version 1.2.1:

1. In JavaScriptEngineSwitcher.V8 added support of Microsoft ClearScript.V8 version 5.4.0 (support of V8 version 3.26.31.15);
2. In JavaScriptEngineSwitcher.Jint added support of Jint version of October 21, 2014.

Version 1.2.0:

1. From JavaScriptEngineSwitcher.V8 and JavaScriptEngineSwitcher.Jint removed dependency on `System.Web.Extensions.dll`;
2. All assemblies is now targeted on the .NET Framework 4 Client Profile;
3. In JavaScriptEngineSwitcher.Msie added support of MSIE JavaScript Engine version 1.5.0;
4. In JavaScriptEngineSwitcher.Jint added support of Jint version of October 9, 2014.

Version 1.1.13:

1. In JavaScriptEngineSwitcher.V8 added support of Microsoft ClearScript.V8 version of September 6, 2014;
2. In JavaScriptEngineSwitcher.Jurassic added support of Jurassic version of September 5, 2014;
3. In JavaScriptEngineSwitcher.Jint added support of Jint version of September 16, 2014.

Version 1.1.12:

1. In JavaScriptEngineSwitcher.V8 added support of Microsoft ClearScript.V8 version of August 1, 2014;
2. In JavaScriptEngineSwitcher.Jint added support of Jint version of August 16, 2014.