v4.1.0

1. Documentation: Added upgrade information to the readme file of each DI package.
2. Documentation: Changed description of MvcSiteMapProvider legacy NuGet package to indicate it is now obsolete.
3. Bug: Incorrectly resolved URLs in sitemaps XML when MvcSiteMapProvider is in sub application (#222).
4. Bug: Fix for custom AuthorizeAttribute implementations that are sealed or have a non-public constructor (#156 and #220). Important Change: If your custom AuthorizeAttribute overrides OnAuthorization(), you must ensure that filterContext.Result is not null when authorization fails and is null when authorization succeeds.
5. Feature: Refactored IRequestCache to inherit from ICache so other types of caches can be swapped.
6. Bug: Added exception message in the case where the same key is added to RouteValues and PreservedRouteParameters on the same node.

Important Note: If you are using SimpleInjector, you must remove the following code from your DI module, or you will get compile time exceptions after installing this (or a future) version.

container.RegisterSingle<AuthorizeAttributeAclModule>(() => new AuthorizeAttributeAclModule(  
                                                          container.GetInstance<IMvcContextFactory>(),  
                                                          container.GetInstance<IObjectCopier>(),  
                                                          container.GetInstance<IControllerDescriptorFactory>(),  
                                                          container.GetInstance<IControllerBuilder>(),  
                                                          container.GetInstance<IAuthorizeAttributeBuilder>(),  
                                                          container.GetInstance<IGlobalFilterProvider>()));