Merge pull request #8 from RathnaS/master

Merge
queue with Tx version
Merge branch 'master' of https://github.com/pan3688/projectspace
stacks
Merge pull request #9 from RathnaS/master

Stack Final Revision Added
Merge pull request #10 from RathnaS/master

Open and Closed Fixed
Merge pull request #11 from RathnaS/master

Final Revision
TransactionalHashset added