Lifetime of a cell

####Cell / set behaviour proposal

Set loads, for all visible cells:

• basic cell is being attached to DOM
• poster image displayed (if cell has one)
• cell content is not loaded (can be overridden through "autoload" field)

Hover cell

• displays title and description

Click cell, for cells that have more content:

• message to currently active cell to let it know it should stop
• currently active cell is being deactivated (can be overridden by "sticky" field)
• clicked cell becomes active cell
• content is attached to DOM / loaded
• message is sent to / into cell to let it connect to set (https://github.com/fjenett/postmessenger-js)
• message is sent to cell to let it know it should "start"

Cell "finished"

• cell sends message that it stopped

Scrolling out

• message sent into cell to let it know it will become deactivated
• cells are being deactivated and go back into poster image state (can be overridden by "sticky" field)
• cell is being hidden through CSS display:none

Scrolling in

• message is sent to cell to let it know it will become activated rest same as Set loads above

Set changes, all cells:

• are removed from the DOM