Down to 7 test failures

modules/util/curtain.js

@@ -1,5 +1,4 @@
 import * as d3 from 'd3';
-import 'd3-selection-multi';
 import { getDimensions } from './dimensions';
 import { rebind } from './rebind';
 import { Toggle } from '../ui/toggle';

modules/util/tooltip.js

@@ -1,6 +1,5 @@
 import * as d3 from 'd3';
 import { functor } from './index';
-import 'd3-selection-multi';
 
 export function tooltip() {
   var tooltip = function(selection) {