I’m starting to think that this is a red flag when looking at a project when there’s no further information. It’s marketing-speak masquerading as a technical attribute, but without additional information could just be 100% incorrect. It’s also overly-generic… depending on the intent of the author, lightweight could mean CPU-efficient, small binary, feature-light, and so on, but when not qualified further it seems to be implicitly all of these and more, but most likely that’s not accurate.
My marketing pet-peeve aside, this looks nice and I will be trying it out. :) Congrats on your HN launch!