Returned curvy sequence flows, modified label position for flow, added text annotations, associations
Added associations, annotations, changed label to multiline text
Moved label from the center of sequence flow using labels x and y positions.
Calculate maximum values for artifacts and associations
ACT-1789, historicTaskinstanceQuery support candidate
Fix for extension elements for process, sub process, lanes, pools etc
Merge branch 'master' of https://github.com/Activiti/Activiti
More work on conversion/artifact creation for alfresco-simple-workflow
Merge branch 'ACT-1789' of https://github.com/xuhuisheng/Activiti
Improved testing
Merge branch 'master' of https://github.com/Activiti/Activiti
test fixes for history none config
Custom namespace attributes

Implementation for Process and UserTask.
We should consider to move all custom attributes to
BaseElement.attributes.
merge fix
Custom namespace attributes - blacklist parsing
Merge with master
Merge branch 'ca-3' of https://github.com/martin-grofcik/Activiti
small changes to pull request
Make private interface DeleteOperation public

+ make its implementations BulkDeleteOperation, CheckedDeleteOperation
public too.
Removed commons-io dependency from simple-workflow-alfresco