Great news! I'd seen river before (already had it bookmarked) but was unaware (or forgot) that it planned a feature like this. As long as they don't make it to

Great news! I'd seen river before (already had it bookmarked) but was unaware (or forgot) that it planned a feature like this. As long as they don't make it to tiling specific, which doesn't look likely given the wording of the Features section, it should be almost exactly what I want. Thanks!