Upload pypi

- Changed to setup.cfg
 - Changed to tox
 - Moved module dir to src
 - Moved tests dir from module to tests dir
 - Corrected .drone for changes
 - Update to 0.9.0

setup.cfg

@@ -0,0 +1,28 @@
+[metadata]
+name = ddOperApi
+version = 0.9.0
+author = Marcel Nijenhof
+author_email = pypi@marceln.org
+description = Interface for the dd-oper protocol
+long_description = file: README.md
+long_description_content_type = text/markdown
+url = https://git.marceln.org/marceln/ddOperApi
+classifiers =
+    Programming Language :: Python :: 3
+    License :: OSI Approved :: MIT License
+    Operating System :: OS Independent
+    Development Status :: 4 - Beta
+
+[options]
+package_dir =
+    = src
+install_requires =
+    python-dateutil
+    requests
+    numpy
+    pyopenssl
+packages = find:
+python_requires = >= 3.6
+
+[options.packages.find]
+where = src