[Cuis] Cuis 4.2 is released

[Juan Vuletich]

Hi Folks,

I've just pushed Cuis 4.2 to https://github.com/Cuis-Smalltalk/Stable 
and to https://github.com/Cuis-Smalltalk/Development . As you know, 
biggest news is package dependency support by Ken Dickey and me. Several 
packages were extracted from the image, and are included in the repo. 
Now, the base image is below 500 classes and below 100kLOC. I also added 
a new package "SignalProcessing".

Enjoy!

Cheers,
Juan Vuletich