Fix/drone setup missing packages (#4)

* Trying explicitly defining colored package version.

* Try first installing from requirements.

* Tried defining pyproject file.

* Requirements references setup packages.

* Import __version__ from import statement directly.

* Removed unused packages and restored requirements file.

* Install dependencies before running setup.

.drone.yml

@@ -11,6 +11,7 @@ steps:
   - name: Install python
     image: python:3.8
     commands:
+      - pip install -r requirements.txt
       - python setup.py install
       - pip install pytest
       - pytest
@@ -18,8 +19,8 @@ steps:
   - name: Upload coverage report
     image: python:3.8
     commands:
-      - python setup.py install
       - pip install -r requirements-dev.txt
+      - python setup.py install
       - coverage run -m pytest
       - codecov -t $CODECOV_TOKEN
     environment: