GeoJSON generators should be moved.

[dmtucker]

Either they are a feature of gjtk in which case they should be added to gjtk.js, or they should be merged into geojson-random or similar and be required.

The main argument for merging them would be that independently developed/maintained would be used in test code. On the other hand, gjtk already has the means to test them.

tmcw/geojson-random#9 is relevant here.

[dmtucker]

The template methods could be leveraged if the generators were added to gjtk.

[dmtucker]

Other implementations are not covered by geojson-random or the like.