add tm2z profiling test
render to vector tile
vtile.toGeoJSON
loop framework
full recursion
log largest tile in a zoom level
iterate over zoom levels
profile derivative four tiles of z,x,y
profile from zl1 to maxzoom
move comment
start profiling at minzoom center
log profile
add test fixtures to debug slow tm2z
update fixtures and expected
fix lon/lat to xyz, include dense tile array in profile
update expected fixtures
remove console logging, fs.write and expected image fixtures, expand tests
remove customDir
Remove lines test.
Consistent z,x,y argument order.