Added alpha version of Transactional Stream
Transactional spliterator cleanups, TODO refactor
README.md edited online with Bitbucket
more transactional spliterator tests
Added Transactional Spliterators and a couple of tests.
TODO refactor etc
Merge branch 'master' of https://bitbucket.org/cdshines/exp4j
cleanup
Refactored TxStream-related classes into a sensible hierarchy, added a couple of tests