removing ComplexAttribute check
adding test case for updating MetaEvent
Merge branch 'Siddhi-3.0.0' of https://github.com/sacjaya/siddhi into Siddhi-3.0.0
refactor eventConverterTestCase
Merge branch 'Siddhi-3.0.0' of https://github.com/wso2-dev/siddhi into Siddhi-3.0.0
fixing typo in executor class names
Merge pull request #14 from tishan89/Siddhi-3.0.0

Adding test case and removing ComplexAttribute usage in EventConverter