Datasette-llm-embed

- New `llm_embed_decode(blob)` function returning a string JSON array of floats. [4](https://github.com/simonw/datasette-llm-embed/issues/4)

- First non-alpha release.
- `llm_embed(model_id, value)` function now works for models that require API keys, such as `ada-002`. The key can be configured as a plugin secret in the `metadata.json` or `metadata.yaml` file. [3](https://github.com/simonw/datasette-llm-embed/issues/3)

- New `llm_embed_cosine(a, b)` function to calculate cosine similarity between two binary blob vectors. [2](https://github.com/simonw/datasette-llm-embed/issues/2)

- Initial release, with `llm_embed(model_id, text)` SQL function. [1](https://github.com/simonw/datasette-llm-embed/issues/1)