views_board 1.0.0-beta4

What blocks a card, lanes that follow a date or a number, and a Dependency field that records how two items are linked.

• A board can show on each card what it waits for, from an entity reference field to items of the same type: pending while the item is open, met once it is in a finished column, and a conflict, in red, when the card is finished first. A move redraws the lines of the cards that wait for the moved one. BoardDependencyEvent lets a site decide a dependency's state, note and classes, the new views_board/arrows library draws dependencies as arrows, and the Views Board Tools return them with each card (#8).
• Lanes from an entity reference can follow a date or number field of the entity each lane stands for, so lanes by milestone follow the milestones' dates and lanes by term the terms' weight. The board now also carries the cache tags of the lanes' entities, so renaming one updates its lane on the next load (#9).
• The new Views Board Dependency Field submodule adds a Dependency field: a reference that also records the link type of a Gantt chart (finish-to-start, finish-to-finish, start-to-start or start-to-finish), and refuses cycles and the same link twice. It works as a board's Blocked by field, gets relationships both ways in Views, and a site can extend it with columns of its own (#12).

The README covers each of them under "What blocks a card", the Order lanes by option, "Drawing dependencies as arrows" and "Dependency field", and adds the new API to "API and stability".