The main new feature of (SIASL)² 1.1 is that unused instructions behavior can now be defined using (# and #).
To learn about this check out the updated docu and README.txt files.
I think this feature is pretty cool and neat.

The other feature addded with this release is the possibility to write multi-line comments using curly brackets:
exemple :
{ this is a comment }

This release also corrects bugs that caused memory leaks or errors
space was also changed from being equivalent to # to being a neutral character which makes more sense.

As far as I know this version of the (SIASL)² interpreter is stable. If you encounter any issue feel free to report them to me.