adding a new radial layout i ended up not using. oh well. tried a bunch of different l
ayouts, ended up back with what we had in the last commit. adding zoom/pan for the viewport and drag for network nodes. really working great. id like to do a more localized layout of workers around the copanies they work at instead of a forced radial plan, but until d3.force supports masses for nodes (or at least makes setting link bias a public api) this will likely have to wait!
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