These projections are available in the geo.projection plugin.
forked from mbostock's block: Projection Transitions
forked from anonymous's block: Projection Transitions
forked from vicapow's block: Projection Transitions
forked from Microbie's block: Projection Transitions
https://d3js.org/d3.v3.min.js
https://d3js.org/d3.geo.projection.v0.min.js
https://d3js.org/topojson.v1.min.js