* Incremental work on persistent file cache
* Rename providers to handlers
* Implement zip file caching for resumable downloads
* Implement partial download for zipped files
* Allow executing workflows using GET verb
* Implement custom header for correlating downloads
* Rename FileName to Filename for consistency
* Update interface XML comment
* Cleanup
* Fix that source Downloadables were executed even when cached zip exists
* Make download correlation ID optional
* Implement Incident Strategy interface and resolver
* Add ActivityIncident model
* Add IncidentCount and Incidents properties and update migrations
* Expose incident strategies API endpoint
* Update API client with Incident Strategy models
* Replace Fault with Incidents
* Register fault status when any children have faulted
* Map incident count
* Remove unnecessary AlreadyCompleted result
* Ensure next activities are scheduled only if activity completed normally
* Incident roundtrip and fix workflow instance realtime updates
* Remove unused variable
* Add integration tests