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SpiffWorkflow/RELEASE_NOTES.md

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What's Changed

Since the last release, we've continued to work on making SpiffWorkflow easier to use and internally consistent as well as added a few new features to support SpiffArena.

Breaking Changes from 2.x:

  • We refactored task iteration to allow for greater flexibility in selecting tasks. Usage of workflow.get_tasks has changed. See Filtering Tasks for documentation.
  • We've continued to reorganize files in order to impose more structure on the package. Imports have changed (but we've added __init__.py files to make these reorganizations less painful in the future). See an overview of the package structure at What's in the BPMN Module.
  • We've simplified the BPMN serializer. BPMN Serializer

Features and Improvements

New BPMN Support

  • Added support for Conditional Events.

New BPMN Extensions

  • Added the ability to include a payload on Signal, Error, and Escalation Events.
  • Added a category to Data Objects.
  • Added the ability to choose whether Pre and Post Scripts attach to a MultiInstance Task or each of the instance Tasks.

General Library Improvements

  • Added __init__ files to modules.
  • TaskState now handles name/value conversions for any mask.
  • Refactored workflow execution to take advatage of the changes to task iteration.
  • Unified spec and data serialization for BPMN workflows, and made the serializer easier to configure.
  • Retrieve tasks directly from their IDs rather than traversing the tree.
  • Removed some of the extra task specs that had been automatically added to every workflow.
  • Added a method for allowing task specs to expose internal data.
  • We've continued to remove unused code and unneeded tests.
  • We've made the documentation more developer-centric.

Other Changes

  • Deprecated the FEEL engine.
  • Removed Box.

Bugfixes

  • Multiple BPMN Start Events are handled correctly.
  • Full support for the BPMN executable attribute.
  • Fixed a bug in date calculations in Timer Events.
  • Ensured that tasks created by Cycle Timers to inherit data from the parent task.
  • Delayed the first cycle of the the Cycle Timer by the cycle duration.
  • Fixed some bugs relating to how tasks with boundary events are parsed.
  • Removed dependencies on descendant tasks from parallel gateway merges that could cause workflow execution to stall.
  • Ensured that all dependencies of a subprocess are identified by the BPMN parser.

Full Changelog: https://github.com/sartography/SpiffWorkflow/compare/v2.0.1...v3.0.0rc0