Replace deprecated module

[kamataryo]

This PR replaces deprecated and renamed module queue-async into d3-queue.

[coveralls]

Coverage remained the same at 97.685% when pulling 9a24531 on KamataRyo:master into 0cb09a3 on mapbox:master.

[kamataryo]

Test fails here only with Node.js 0.12.
https://travis-ci.org/mapbox/tilelive/jobs/170313918#L1265

# de/serialize: round-trip
ok 224 null
not ok 225 round-tripped mbtiles are approx. the same size
  ---
    operator: ok
    expected: true
    actual:   false
    at: Put.makeAssertions (/home/travis/build/mapbox/tilelive/test/stream-deserialize.test.js:189:11)
  ...