Change Details

`cd _tests && make`

``` $ python3 -m venv /path/to/new-venv $ source /path/to/new-venv/bin/activate $ pip install -r requirements.txt $ cd _tests $ make python -m unittest discover modules ........ ---------------------------------------------------------------------- Ran 8 tests in 0.196s OK ```

`cd _tests && make`` $ python3 -m venv /path/to/new-venv $ source /path/to/new-venv/bin/activate $ pip install -r requirements.txt $ cd _tests $ make python -m unittest discover modules ........ ---------------------------------------------------------------------- Ran 8 tests in 0.196s OK ```