Fork created to solve packaging woes

[dsoprea]

I've created a fork in order to fix the issues that prevent this module from being packaged, imported, or pushed to PyPI. I specifically needed to use this from a project. Since this repository hasn't seen updates for a while and I needed to have these issues resolved immediately, I opted to just fork.

If similar updates are made to this project (and a willingness to maintain the package in PyPI is apparent), I'll gladly refer back to it and archive mine.

I'm the custodian of the Go implementation of the blockhash algorithm (listed on blockhash.io).

Related to #6, #11

Detailed notes are in the first commit of my fork: dsoprea@2b96735