Prevent ts compile errors due to updated d3.tsd.ts typings. Closes Caleydo/caleydo_d3#2
Prevent ts compile errors due to updated d3.tsd.ts typings. Closes Caleydo/caleydo_d3#2

Caleydo/stratomex.js,Caleydo/stratomex.js,Caleydo/stratomex_js,Caleydo/stratomex_js,Caleydo/stratomex_js,Caleydo/stratomex.js