Revert "chore(package): update noflo-core to version 0.3.1"
Revert "chore(package): update noflo-core to version 0.3.1"

This reverts commit f3084c522b24b790c8fbbfb4c7afcea64c5717b9.

noflo/noflo-canvas,noflo/noflo-canvas