Pangolin

Adapts to the latest changes in the compass-parser new release, release.pangolin.

• Removes the is_dataset parameter from CompassDocument and all the parser process file/files/folder functions.
• CompassDocumentChunk.origin is no longer a pydantic model, but a Dict[str, Any] so that we can add arbitrary non-numeric fields such as "tab_name": "some name" for spreadsheets.