Revert "bump dagre-d3 to 0.2.8"
Revert "bump dagre-d3 to 0.2.8"

breaks clickable foreignobjects

This reverts commit be1c90cc349a63ee944012f4d1c14c9459e271cc.

savaki/atc,simonjjones/atc,pivotal-devin-fallak/atc,zachgersh/atc,zachgersh/atc,zachgersh/atc,pivotal-devin-fallak/atc,simonjjones/atc,utako/atc,utako/atc,savaki/atc,zachgersh/atc,simonjjones/atc,savaki/atc,utako/atc,pivotal-devin-fallak/atc