Changelog

4.0.0 - TBD

#2555 Added PSR-15 Middleware Support
#2529 Slim no longer ships with a PSR-7 implementation. You need to provide a PSR-7 ServerRequest and a PSR-17 ResponseFactory to run Slim.
#2507 Method names are now case-sensitive in Router::map(), and so, by extension, in App::map()
#2497 PSR-15 RequestHandlers can now be used as route callables
#2496 A Slim App can now be used as PSR-15 Request Handler
#2405 RoutingMiddleware now adds the routingResults request attribute to hold the results of routing
#2404 Slim 4 requires PHP 7.0 or higher
#2425 Added $app->redirect()
#2398 Added Middleware\ErrorMiddleware
#2329 Added Middleware\MethodOverrideMiddleware
#2288 Separate routing from dispatching
#2254 Added Middleware\ContentLengthMiddleware
#2166 Added Middleware\OutputBufferingMiddleware

#2589 Remove App::$settings altogether
#2587 Remove Pimple as a dev-dependency
#2398 Slim no longer has error handling built into App. Add ErrorMiddleware() as the outermost middleware.
#2375 Slim no longer sets the default_mimetype to an empty string, so you need to set it yourself in php.ini or your app using ini_set('default_mimetype', '');.
#2288 determineRouteBeforeAppMiddleware setting is removed. Add RoutingMiddleware() where you need it now.
#2254 addContentLengthHeader setting is removed
#2221 Slim\Http has been removed and Slim now depends on the separate Slim-Http component
#2166 outputBuffering setting is removed
#2078 Remove App::subRequest()
#2098 Remove CallableResolverTrait
#2102 Remove container from router
#2124 Remove Slim\Exception\SlimException
#2174 Switch from Container-Interop to PSR-11
#2290 Removed container. Set your own using App::setContainer()
#2560 Remove binding of $this to group()

#2588 Fix file/directory permission handling of Router::setCacheFile()
#2067 Unit tests now pass on Windows systems
#2405 We rawurldecode() the path before passing to FastRoute, so UTF-8 characters in paths should now work.