Thanks,
If I find good specs for this format I will add it.
From what I can tell there are no official specs for this file from Adobe.
There are only reverse engineered descriptions on some forums.
Thanks for considering it & looking into that!
These place might be useful for getting ASE description:
http://www.selapa.net/swatches/colors/fileformats.php#adobe_ase (please scroll down to see binary descriptions of format)
https://github.com/RoyCurtis/ASE2GIMP
https://github.com/jonathantneal/readase
Cheers