h3

When building algorithms using H3, consumers may need to satisfy specific constraints, e.g. "buffer within X meters of a given point". Our existing edgeLength and hexArea stats are averages, which is insufficient to determine whether a given resolution or buffer size will satisfy the requirement.

I think it would be worthwhile to calculate and publish (either in the library or in the docs)

file echo_client.c, line:121 st_h->read_stdin_ev = event_new(prog_eb(st_h->client_ctx->prog),
STDIN_FILENO, EV_READ, read_stdin, st_h);

H3-Pandas has no implementation of h3_to_children. It should be straightforward to implement it using essentially the same logic as other collection-creating methods, such as k_ring. Similarly to other methods, it should provide an `