Mermaid Kanban Board with MAIDR

Columns are the top level; down opens a column onto its cards, each with its ticket, assignee and priority.

kanban
  todo[To do]
    docs[Write the docs]@{ assigned: 'ana', priority: 'High' }
    tests[Add the tests]
  doing[In progress]
    adapter[Mermaid adapter]@{ ticket: MA-12, assigned: 'jo' }
  done[Done]
    traces[New traces]@{ priority: 'Low' }