verbose mode

I think it would be really useful to have a flag you could turn on when debugging that made leveldown write something like this to stdout:

OPEN "test"
PUT "ÿfooÿhello", "world", "String"
GET "ÿfooÿhello", "world", "String"
GET "ÿfooÿweeee", "Key not found in database [ÿfooÿweeee]", "NotFoundError"

I could monkeypatch to implement this today as a third party module but I wanted feedback on where in the stack something like this could go. I imagine that simple if (verbose) checks would get inlined by v8 etc

[vweevers]

Wrote https://github.com/vweevers/debugdown in 30 mins. Short of docs, usage is:

var levelup = require('levelup')
var leveldown = require('leveldown')
var debugdown = require('debugdown')

var db = levelup(debugdown(leveldown('db')))

// Use db like you normally would

Here it is in action on the test suite of leveldown with DEBUG=debugdown:

[heapwolf]

this is a perfect user land thing. and could be done with hooks quite easily. new module!