Fixing Filter test30
Merge pull request #14 from tishan89/Siddhi-3.0.0

Adding test case and removing ComplexAttribute usage in EventConverter
Adding new EventConverters to handle different scenarios and moving to new package
Performance improvements related to AttributeProcessors
test cases for event converter
performance improvements
Merge branch 'Siddhi-3.0.0' of https://github.com/wso2-dev/siddhi into Siddhi-3.0.0