expand node height to fit ports closes #158
v 0.3.0
smaller increment #158
tall node test #158
Merge branch 'master' into dev
use node height to calc group bounding #158 noflo/noflo-ui#120
build random graph
the-graph-editor: remove unused attributes
the-graph-editor: add clearErrorNodes() method
Merge pull request #161 from djdeath/process-errors-cleanup

Process errors cleanup & addition
compat with Polymer 0.4.0 Polymer/polymer-gestures#54
v 0.3.1