Activiti/Activiti — pull request #141 by gtudan (2013-10-01 08:43:22+00:00)
Title: ACT-1801: fix JSON-Serialisation of process with lanes

backreference to process in lanes leads to endless recursion and finally heap-space errors when marshalling a model to json.
Adding @JsonBackreference fixes this.

Thanks to Christian Huff for spotting this and coming up with a solution.