We've intentionally chosen to release 1.0.0 at a time of relative stability within SQLFluff and not at a time when new big structural changes are being made. This means that there's a good chance that this release is broadly usable. This also recognises that through the hard work of a huge number of contributors that we've built out this from a fringe tool, to something which gets over 500k downloads a month and over 4k stars on Github.