You have to consider the nature of the bug, as well as the fix. The bug was an Undefined Behaviour that had no effect on the binaries I could generate. The fix was 10 characters. Running the automated test suite took longer than fixing the bug.
If there were reasons to delay 1.0, this bug was not it.
> I believe that further fragmenting the crypto ecosystem with a new library and little commercial support to properly back it and pay for security audits is risky.
I agree fragmentation is a problem. I just couldn't satisfy myself with existing alternatives. As for support, I designed Monocypher specifically to need very little of it. Ideally, the only notable changes from now on will be about the manual and the test suite.