Research best practices around Hoist components used as grid column renderers

[PeteDarinzo]

When a Hoist component with a local model is used as an AG Grid column renderer, it is remounted on every prop update.

This issue was discovered when using a component that displays the elapsed time between the current time and a timestamp prop, similar to Hoist's relativeTimestamp component.

Remounting of the component every time the a new timestamp was received caused a memory leak which was visible from the Windows task manager processes tab. The issue was corrected by making one timer applicable to the tab model that contained the grid, but the issue could be reappear in other applications.