cleanup of unneccessary changes
support for transactional http api
Added support for the transactional API

It is automatically enabled for servers that expose a /db/data/transaction endpoint.

# TODO
* fix performance tests (both client and server hang)
* Expose the transactionality in a sensible way.
* fix version issue
fixes leaking of connections, with by progressing to parse after exhausting an execution-result and configurable connection timeout.

updated documentation
2.0.0-M02 dependency