new mapnik-omnivore version with increased maxzoom
no longer default extent to WGS84, transform srs of dataset for actual extent
get extent using new mapnik-omnivore function
revert back to check places test failures
revert back to new extent function
updated mapnik-omnivore with exported extent function
Merge branch 'pin-gazetteer' into detect-extent
Merge pull request #887 from mapbox/detect-extent

Detect extent