v0.1.12

Added

• c.row :field1, :field2 groups fields horizontally in a Pico CSS grid on the edit page
• c.section "Label" [, collapsed: true] wraps fields in a native <details>/<summary> collapsible block (no JavaScript required); rows and individual fields
  can be nested inside sections
• c.field called inside a section block moves an existing auto-discovered field into the section rather than leaving it at the top level