Simplifiction: removal of a redundant variable (filterer), and no need for d3.map structure, since d3.keys() fills the role just fine.
Simplifiction: removal of a redundant variable (filterer), and no need
for d3.map structure, since d3.keys() fills the role just fine.

Solinea/goldstone-server,slashk/goldstone-server,slashk/goldstone-server,slashk/goldstone-server,Solinea/goldstone-server,slashk/goldstone-server,Solinea/goldstone-server,Solinea/goldstone-server,Solinea/goldstone-server,slashk/goldstone-server