* use bpmnFactory for cloning to ensure all relevant
elements have actual IDs
* don't copy dataAssociations, as they are visual elements
that will be created during element re-connection
NOTE: This fixes data input association not properly being
wired during target replace, too.
Closes#694, #693
This introduces a 'property.clone' event that allows
plugging into the cloning mechanism when cloning
nested extension elements.
Related to camunda/camunda-bpmn-moddle#35
Nico Rehwaldt
Ricardo Matias
Ricardo Matias