Blockdag

Apologies, but this has to match nicely.

Adjusts version number for personal sanity.
Apologies for the snafu.

Straightforwardly changes the install dependency from merklelib to np-merklelib.

Adds mid-traversal functions supplied as arguments.

What's Changed
* Functions by pritchardn in https://github.com/pritchardn/BlockDAG/pull/1

New Contributors
* pritchardn made their first contribution in https://github.com/pritchardn/BlockDAG/pull/1

**Full Changelog**: https://github.com/pritchardn/BlockDAG/compare/v1.0.1...v1.1.0

This is the first major release establishing the basic API.
Installation is available with [pip](https://pypi.org/project/BlockDAG/).