Fixed: can't find task that assigneed to a user by filter taskByCandidateOrAssigned
[oracle] use indexes for query
TASK_CREATED event implementation
Add compensate handler.
TASK_CREATED event implementation
record category property when creating historic task
Added failing test case for version migration of nested executions.
Fixed version migration of nested executions.
Exclude commons-logging from batik-transcoder to fix classes conflict

We're using jcl-over-slf4j, so it's not needed and should not be there.
ACT-2019 ProcessDiagramGenerator produces black process diagram
Merge pull request #276 from jirutka/fix-exclude-jcl

Exclude commons-logging from batik-transcoder to fix classes conflict
Merge pull request #270 from henryyan/recordCategoryInHistoricTask

record category property when creating historic task
Merge pull request #268 from martin-grofcik/TASK_CREATED

TASK_CREATED event implementation
Merge pull request #269 from xiongbupt/addCompensateDef

Add compensate handler.
Merge pull request #279 from martin-grofcik/ACT-2019

ACT-2019 ProcessDiagramGenerator produces black process diagram
Merge pull request #265 from martin-grofcik/oracle-indexes

[oracle] use indexes for query
Merge pull request #271 from flexik/nested-executions-migration

SetProcessDefinitionVersionCmd Nested sub executions migration fix
Merge pull request #243 from henryyan/queryTaskByCandidateOrAssigned

Fixed task query by method taskByCandidateOrAssigned
Removed redundant setValue call
Reduced log level of XML exceptions for empty models