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.

pyproject.toml

@@ -0,0 +1,7 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel"
+]
+
+build-backend = "setuptools.build_meta"