v0.2.9

• Correct what 0.2.6 said about the multilingual checkpoint. Its 0.527 on yes/no questions was mostly the unnamed options: the same 150 rows with the two options named score 0.853, against the English checkpoint's 0.887. The English checkpoint stays the default on calibration (0.049 against 0.103), not on "barely above chance". docs/backends.md has both columns and the third checkpoint.
• Re-measured the README and docs/ numbers on the current release of every dependency, including laya-mlx 0.4.0, which answers identically to 0.1.0 and is slower here: one Choice question goes from 15.6 ms to 20.9 ms.