Collection location can throw

[jisantuc]

locate collection on the aviris-ng collection in https://franklin.nasa-hsi.azavea.com throws the following error:

Error: Unimplemented type: 4
    at Pbf.skip (/opt/js/node_modules/pbf/index.js:211:20)
    at Pbf.readFields (/opt/js/node_modules/pbf/index.js:46:45)
    at new VectorTile (/opt/js/node_modules/@mapbox/vector-tile/lib/vectortile.js:8:23)
    at Tile._loadTile (/opt/js/node_modules/mapscii/src/Tile.js:33:17)
    at /opt/js/node_modules/mapscii/src/Tile.js:24:19
    at processTicksAndRejections (internal/process/task_queues.js:93:5)

Same error as in: rastapasta/mapscii#87