- Previously updates to index required explicitly setting `regenerate=True`
- Now incremental update check made everytime on `text_search.setup` now
- Test if index automatically updates when call `text_search.setup`
with new content even with `regenerate=False`
- Previously we were failing if no valid entries while computing
embeddings. This was obscuring the actual issue of no valid entries
found in the specified content files
- Throwing an exception early with clear message when no entries found
should make clarify the issue to be fixed
- See issue #83 for details
