David Bartley

Seems reasonable to me.

I don't believe I ever did.

fwiw, I wrote a quick benchmark for comparing against gogo faster: ``` func BenchmarkMarshalSSFSpan(b *testing.B) { s := &ssf.SSFSpan{ Tags: make(map[string]string), } for i := 0; i < 20; i++...

There's also the `killCursors` command to replace `OP_KILL_CURSORS`. The other thing that 3.2 adds is support for `readConcern` on query commands (`find`, `count`, etc...), though I imagine the document layer...