Hi,

I've extended specification-ybsc to include README and notes, also add
more details to description.

Pushed to master as:

4b5f0408e66 * master origin/master gnu: Add astroterm.
bcc776301cb * gnu: Add specification-ybsc.

More astro soft are welcome! 

If you fancy to package some, take a look
https://git.sr.ht/~hellseher/ffab/tree/main/item/TODO.md.

--
Thanks,
Oleg