Hi Folks,

I've successfully finished the Spur conversion of Cuis. I was able to  
merge all required changes to Cuis compiler and make it work in both  
ObjectMemories. Cuis is now offered in Spur and pre-Spur formats. And  
the best part is that they share 100% of the source code. There is no  
forking!

This means that there is no extra work in maintaining both flavors.  
So, we are not leaving anyone behind. It also means that, at  
deployment, you might chose between better performance and larger  
memory (with Spur) or smaller footprint and SqueakJS compatibility  
(with pre-Spur).

I've just updated our GitHub repo  
https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev . Included are  
Cuis4.2-2906-spur.image and Cuis4.2-2906.image, and, as usual, the  
whole update stream. I wrote a brief description of the Spur  
conversion at Documentation/SpurConversion.md, in case you want to  
reproduce it, or apply it to your own Cuis images.

The images seem very stable. Please test them, load your code, and  
report any issues. This work was enabled by Eliot Miranda and the  
OpenSmalltalk team who develop Spur, VMMaker and the Spur bootstrap.  
Thank you folks! I also used Squeak 5 as a reference implementation of  
Compiler and related stuff. I also want to thank the greater Squeak  
community for it.

Some cleanup is in order. The scaffolding I did for the conversion,  
including dual Compilers is still in the image. I'll be cleaning it  
soon. I'll also be able to pay a bit more attention to unrelated  
suggestions and ongoing discussion at cuis-dev at cuis-smalltalk.org

Enjoy!

Cheers,

Juan Vuletich
www.cuis-smalltalk.org
https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev
@JuanVuletich