diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..bfd4689
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,51 @@
+version: 2.1
+
+orbs:
+  codecov: codecov/codecov@1.0.5
+
+workflows:
+  version: 2
+  test:
+    jobs:
+      - py38
+      - py37
+      - black
+      - check-manifest
+      - flake8
+
+jobs:
+  py38: &test-template
+    docker:
+      - image: mopidy/ci-python:3.8
+    steps:
+      - checkout
+      - restore_cache:
+          name: Restoring tox cache
+          key: tox-v1-{{ .Environment.CIRCLE_JOB }}-{{ checksum "setup.cfg" }}
+      - run:
+          name: Run tests
+          command: |
+            tox -e $CIRCLE_JOB -- \
+              --junit-xml=test-results/pytest/results.xml \
+              --cov-report=xml
+      - save_cache:
+          name: Saving tox cache
+          key: tox-v1-{{ .Environment.CIRCLE_JOB }}-{{ checksum "setup.cfg" }}
+          paths:
+            - ./.tox
+            - ~/.cache/pip
+      - codecov/upload:
+          file: coverage.xml
+      - store_test_results:
+          path: test-results
+
+  py37:
+    <<: *test-template
+    docker:
+      - image: mopidy/ci-python:3.7
+
+  black: *test-template
+
+  check-manifest: *test-template
+
+  flake8: *test-template
diff --git a/.gitignore b/.gitignore
index 4cd6c95..03640c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,9 @@
-build/
-dist/
-*.conf
-venv/
-*.egg-info
 *.pyc
+/.coverage
+/.mypy_cache/
+/.pytest_cache/
+/.tox/
+/*.egg-info
+/build/
+/dist/
+/MANIFEST
diff --git a/MANIFEST.in b/MANIFEST.in
index 6def079..7734bb0 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,15 @@
+include *.py
+include *.rst
+include .mailmap
 include LICENSE
 include MANIFEST.in
-include README.md
-include mopidy_subidy/ext.conf
+include pyproject.toml
+include tox.ini
+
+recursive-include .circleci *
+recursive-include .github *
+
+include mopidy_*/ext.conf
+
+recursive-include tests *.py
+recursive-include tests/data *
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..bff16e0
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,17 @@
+[build-system]
+requires = ["setuptools >= 30.3.0", "wheel"]
+
+
+[tool.black]
+target-version = ["py37", "py38"]
+line-length = 80
+
+
+[tool.isort]
+multi_line_output = 3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
+line_length = 88
+known_tests = "tests"
+sections = "FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,TESTS,LOCALFOLDER"
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000..2a0e77d
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,87 @@
+[metadata]
+name = Mopidy-Subidy
+version = 0.2.1
+url = https://github.com/Prior99/mopidy-subidy
+author = prior99
+author_email = fgnodtke@cronosx.de
+license = BSD-3-Clause
+license_file = LICENSE
+description = Subsonic extension for Mopidy
+long_description = file: README.md
+long_description_content_type = text/markdown
+classifiers =
+    Environment :: No Input/Output (Daemon)
+    Intended Audience :: End Users/Desktop
+    License :: OSI Approved :: BSD License
+    Operating System :: OS Independent
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Topic :: Multimedia :: Sound/Audio :: Players
+
+
+[options]
+zip_safe = False
+include_package_data = True
+packages = find:
+python_requires = >= 3.7
+install_requires =
+    Mopidy >= 3.0.0
+    Pykka >= 2.0.1
+    setuptools
+    py-sonic >= 0.7.7
+
+
+[options.extras_require]
+lint =
+    black
+    check-manifest
+    flake8
+    flake8-bugbear
+    flake8-import-order
+    isort[pyproject]
+release =
+    twine
+    wheel
+test =
+    pytest
+    pytest-cov
+dev =
+    %(lint)s
+    %(release)s
+    %(test)s
+
+
+[options.packages.find]
+exclude =
+    tests
+    tests.*
+
+
+[options.entry_points]
+mopidy.ext =
+    subidy = mopidy_subidy:SubidyExtension
+
+
+[flake8]
+application-import-names = mopidy_subidy, tests
+max-line-length = 80
+exclude = .git, .tox, build
+select =
+    # Regular flake8 rules
+    C, E, F, W
+    # flake8-bugbear rules
+    B
+    # B950: line too long (soft speed limit)
+    B950
+    # pep8-naming rules
+    N
+ignore =
+    # E203: whitespace before ':' (not PEP8 compliant)
+    E203
+    # E501: line too long (replaced by B950)
+    E501
+    # W503: line break before binary operator (not PEP8 compliant)
+    W503
+    # B305: .next() is not a thing on Python 3 (used by playback controller)
+    B305
diff --git a/setup.py b/setup.py
index 41863e2..6068493 100644
--- a/setup.py
+++ b/setup.py
@@ -1,43 +1,3 @@
-from __future__ import unicode_literals
+from setuptools import setup
 
-import re
-from setuptools import setup, find_packages
-
-
-def get_version(filename):
-    content = open(filename).read()
-    metadata = dict(re.findall("__([a-z]+)__ = '([^']+)'", content))
-    return metadata['version']
-
-setup(
-    name='Mopidy-Subidy',
-    version=get_version('mopidy_subidy/__init__.py'),
-    url='http://github.com/prior99/mopidy-subidy/',
-    license='BSD-3-Clause',
-    author='prior99',
-    author_email='fgnodtke@cronosx.de',
-    description='Improved Subsonic extension for Mopidy',
-    long_description=open('README.md').read(),
-    packages=find_packages(exclude=['tests', 'tests.*']),
-    zip_safe=False,
-    include_package_data=True,
-    install_requires=[
-        'setuptools',
-        'Mopidy >= 2.0',
-        'py-sonic >= 0.7.7',
-        'Pykka >= 1.1'
-    ],
-    entry_points={
-        'mopidy.ext': [
-            'subidy = mopidy_subidy:SubidyExtension',
-        ],
-    },
-    classifiers=[
-        'Environment :: No Input/Output (Daemon)',
-        'Intended Audience :: End Users/Desktop',
-        'License :: OSI Approved :: BSD 3-Clause',
-        'Operating System :: OS Independent',
-        'Programming Language :: Python :: 2',
-        'Topic :: Multimedia :: Sound/Audio :: Players'
-    ]
-)
+setup()
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_extension.py b/tests/test_extension.py
new file mode 100644
index 0000000..b2fa67f
--- /dev/null
+++ b/tests/test_extension.py
@@ -0,0 +1,23 @@
+from mopidy_subidy import SubidyExtension
+
+
+def test_get_default_config():
+    ext = SubidyExtension()
+
+    config = ext.get_default_config()
+
+    assert "[subidy]" in config
+    assert "enabled = true" in config
+
+
+def test_get_config_schema():
+    ext = SubidyExtension()
+
+    schema = ext.get_config_schema()
+
+    # TODO Test the content of your config schema
+    # assert "username" in schema
+    # assert "password" in schema
+
+
+# TODO Write more tests
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..50c10fe
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,23 @@
+[tox]
+envlist = py37, py38, black, check-manifest, flake8
+
+[testenv]
+sitepackages = true
+deps = .[test]
+commands =
+    python -m pytest \
+        --basetemp={envtmpdir} \
+        --cov=mopidy_subidy --cov-report=term-missing \
+        {posargs}
+
+[testenv:black]
+deps = .[lint]
+commands = python -m black --check .
+
+[testenv:check-manifest]
+deps = .[lint]
+commands = python -m check_manifest
+
+[testenv:flake8]
+deps = .[lint]
+commands = python -m flake8 --show-source --statistics