0.3.3

What's changed

• Added a new agent populate feature to delete existing chunks
  in databases if they are no longer found in source dataset.
• Updated the agent chunk command to make sure text chunks
  are not bigger than 5 KB for generating embeddings.
• Added a feature to display the distribution of chunk sizes
  after running agent chunk.
• Added more agent commandlines and options.
• Updated the "Rewrite" button to the "Feedback" button by default.
• Bug fixes.