quick and throwaway support for going geojson -> vector tile - will return an clean this up later on
Feature.toWKB() and Feature.toWKT()
add getPixel/setPixel on mapnik.Image
vtile.query: break early if hit_test works
vtile.query tolerance default should be 0.0
Restrict test to >= 2.3.x
Merge pull request #197 from mojodna/wellknown

Feature.toWKB() and Feature.toWKT()
add #197 to changelog
featureset.next() is broken with node v0.6.x so skip this test if using old node
vtile.query: accept 'layer' option to restrict results - refs mapbox/carmen#64
pretty print grid test data
update vtile tests
add vtile rendering with markers
fix test name
use latest mapnik-vector-tile with tile_datasource geometry improvements
more tests for vtile.query
use internal hit_test algorithm for now
add dev deps WITHOUT rewritting package.json
Merge pull request #198 from calvinmetcalf/dev-deps

include testing dependencies as dev deps
travis: stop testing on node v0.6.x as per isaacs/npm#4379