Dashboard development : ways to review changes

What are the typical ways/tools for reviewing changes to dashboards being developed by a team. We are looking at around 30 - 50 dashboards, by the time we are done.

Simply comparing the *.json files is not very intuitive. And eyeballing changes by loading the before and after dashboards, apart from being a pain, is not the most efficient methods.

You can open dashboard version history, it allows you to pick two versions and compare