Update to allow conda installs on python 3.8 (#93)

* Update to p.q logic for handling sys.argv * reintroduction of old logic * addition of initial sys argv and embedpy version check * Update to allow install on python 3.8

Author: cmccarthy1

conda-recipe/conda_build_config.yaml

@@ -2,3 +2,4 @@ python:
  - 3.5 [unix]
  - 3.6
  - 3.7
+ - 3.8