consider supporting a JSON array format?

[cboettig]

Other libraries plotting h3 cells, such as deck.gl use a simple array format in JSON, e.g. https://raw.githubusercontent.com/visgl/deck.gl-data/master/website/sf.h3cells.json

This format is also easy to generate from database tools like duckdb, which has an excellent h3 extension. While I appreciate the rationale behind having separate metadata and cell sections, there are other options for tracking metadata and it would be very nice to have support for the same array structure, which feels like it should be a relatively small tweak?