Desperatly need to add docs

Some notes to include

• in your spreadsheet, wrt tap order
  • put doc collectionsp test first
  • then edge collections
  • then graphs
• skip, auto
• uuid and password types are special
• prefix tab (worksheetname) with . to skip
• data tables (data list type not valid)
• data lists
• horiontal data lists (only for data lists)

NYI:

• nested props

TODO:

• document handling of empty cells in data tables and data lists (does this require any re-thinking)