Why is SQLAlchemy still under 1.0? Are there good reasons, or is it just the apparently typical (and typically irrational) fear of the version number "1.0"?
originally i was going to skip from 0.8 just to 1.0, but then a lot more new features and behaviors came into 0.9, so i figured lets just do the one more non-1.0 number. There's not going to be an "0.10", it'll be 1.0.
If I had to venture to guess, the project most likely started with 0.x notation because the first few releases didn't have major planned features such as the declarative ORM. After that there were never any truly backwards incompatible versions to merit a full number increment.
Really, it's a credit to just how much Mike got right on the first go.