don't access template when using standard typedbytes
no longer needed
big perf penalty for this, must go

was tentative support for row names, will have to rethink
responsibility to open is not here, so we shouldn't close either
slightly faster for same result
aggressive move to close unused connections

Otherwise it would reach max allowed connections, even with a gc call
makes for prettier code

abandoned attempt to simplify inner loop, too many crashes, perf good
enough
upgraded kv.cmp to work with new serde. All tests but equijoin pass at this point.

kv cmp assumed stable ordering of keys, we apparently can't anymore