Replace custom cache with lru-cache module.
Nuke reap arg from README.
Merge pull request #42 from mapbox/lru-cache

Add lru-cache to replace custom implementation
0.8.0
Remove backend VT caching entirely.
Remove maxAge option from README
Merge pull request #43 from mapbox/no-cache

Remove backend VT caching entirely
0.9.0
Loosen mapnik semver
0.10.0
Failing test for empty deflated protobuf.
Treat zero-length buffer as solid tile.
Merge pull request #46 from mapbox/zero-length-pbf

Zero length pbf
0.10.1
Noop close()
Merge pull request #47 from mojodna/close

Noop close()
merge with master