More tidy-up of the packaging script and minor changes to make library more Py2-friendly

This release doesn't change the library code, just tidies up the project a little bit and changes the project tagline to something more descriptive.

Bugfix: fix issues with setup.py which made package un-uploadable

Package is now available on PyPi at https://pypi.org/project/basest/

This is the first public release of basest (for python).

The version number has been bumped to v0.7.0 to reflect the open-sourcing.

A bunch of fixes and additions are added in this release, putting the project ready (in my eyes) for the public.

The most significant additions in this release are more tests and validation checks within the library.