13.1.0 release candidate 4 (build 24) released

[forster at ozonline.com.au]

> Also,
> http://wiki.laptop.org/go/XO_4_Touch_Testing#Reprogramming_the_Neonode_Firmware
> is where we are keeping the documentation on this at the moment.

I have added a brief note and link to this at http://wiki.laptop.org/go/Release_notes/13.1.0#XO-4

Tony