Feature Request: Include sub item updates in the Slack integration similar to the item updates

For the Slack integration we are able to post updates in board items and those updates show in Slack channels. Very handy when one has an interest in following. However a lot of users utilize items as the larger task and sub items for a lot of the work that rolls up to the parent item. The Slack integration today does not record updates to sub items. It would be nice if the same types of sub item updates are posted in Slack the way that the item updates are.