Version 0.4.2

• Switch LLM chat output to streaming when available.
• Fix inclusion of title-based transclusion ">t", which included the "t" as part of the completion.
• Fix tag renaming possibly causing duplication.
• Ensure renamed tags are normalized.
• Support metadata where fields are specified via multiple property lines and make "title" such a field, so now titles can have commas.
• Add new cleanup: ekg-clean-propertized-text, run on ekg-clean-db.