Reverting the changes that done to remove comments
Merge pull request #4 from mohanvive/master

Reverting the changes that done to remove comments
Committing the patch provided by Lahiru (Frequent window & Lossy Frequent window)
Merge pull request #5 from mohanvive/master

Committing the patch provided by Lahiru (Frequent window & Lossy Frequen...
Fix for the issue https://wso2.org/jira/browse/CEP-859
Merge pull request #6 from mohanvive/master

Fix for the issue https://wso2.org/jira/browse/CEP-859