Pypsg

- If Docker engine is not installed on os, handle exception and infer that PSG is not installed either.

**Full Changelog**: https://github.com/tedjohnson12/pypsg/compare/v0.1.1...v0.1.2

What's Changed
* Make docker importable from top level by tedjohnson12 in https://github.com/tedjohnson12/pypsg/pull/12



**Full Changelog**: https://github.com/tedjohnson12/pypsg/compare/v0.1.0...v0.1.1

First releasable version of pypsg with a stable API. Not fully tested yet, and does not support all PSG output types