geochunk: Break data up into chunks of similar population

geochunk is intended for use in a distributed system. It provides a deterministic mapping from zip codes to "geochunks" that you can count on remaining stable.

``` geochunk - Partition data sets by estimated population.

Usage: geochunk export geochunk csv geochunk (--help | --version)

Options: --help Show this screen. --version Show version.

Commands: export Export the geochunk mapping for use by another program. csv Add a geochunk column to a CSV file (used in a pipeline).

Types: zip2010 Use 2010 Census zip code population data. ```