…ugClassLoader (wouterj)This PR was merged into the 5.4 branch.Discussion----------[5.4] Document the patch type functionality of the DebugClassLoaderThis is a critical bit of functionality that we have to explain before the stabilization phase, in order to document for open source maintainers how to make their packages compatible with Symfony 6. When 6.0 is released, it is also an important feature to smooth upgrading for application users. This is why the main text focuses on application, and I added a special sidebar for OSS maintainers.I wasn't sure about the location for this functionality, but I think it makes most sense in the "upgrade major" article (although it used to be a very generic document).`@nicolas`-grekas and `@derrabus` as far as I know, you two have been most involved in this process. Please, if you have time, validate that feature is described correctly and that the "Recommended approach for OSS maintainers" is actually the recommended one :D---Refsymfony/symfony#42988Commits-------fbf0adf Document DebugClassLoader type patch functionality