-Link to release note 4.0.0 is not valid
-I believe many comments in the lib's code (version 4.0.0) are not updated and therefore the doxygen generated docu is also not valid. Example: Code in https://webtoolkit.eu/wt/wt-4.0.0-rc1/doc/reference/html/classWt_1_1WFileUpload.html#details would not compile. Question: When is docu up to date?
The release notes link has been fixed. The documentation for Wt 4 could indeed use more work. I hope to find time to update most of it before the Wt 4 release.