In the 1.5 version we have fixed a bug in the category REST API. When only a partial tree is selected and a search parameter is passed the search could also returns results outside of the initial partial tree.
The other bugfix aims at the newer version of our XML for defining image formats. Retina images were not generated correctly because of this.
The 1.6 series had a bug when adding multiple slashes at the end of the startpage which caused the website to crash. With Sulu 1.6.13 this bug was fixed by redirecting these URLs to the startpage.
Additionally the RouteRepository has now a findAllByEntity method which can be useful for other bundles.