I have received a few emails concerning the lack of improvements of GNU XaoS, so I decided to have a try and propose a project for GSoC 2015. GNU XaoS was already on the list for GSoC 2012 (see here:
http://www.gnu.org/software/soc-projects/ideas-2012.html), but the links will not work any longer, they are:
Thank you for considering adding GNU XaoS to the Ideas page. (I hope it is not too late yet.)