Удалены requirements.txt файлы.

Добавлены ссылки проекта в setup.py
Добавлена команда для запуска тестов.
Тесты включены в пакет.
Список изменений добавлен в описание пакета на PyPi.

MANIFEST.in

@@ -1 +1 @@
-include LICENSE requirements.txt
+include LICENSE Pipfile.lock

docs/requirements-docs.txt

@@ -1,2 +0,0 @@
-sphinx
-sphinx_rtd_theme

requirements-dev.txt

@@ -1,7 +0,0 @@
-requests
-pytest
-codecov
-pytest-cov
-ujson
-importlib_metadata
-atomicwrites

requirements.txt

@@ -1 +0,0 @@
-requests[socks]

setup.py

@@ -1,43 +1,66 @@
+import sys
+import json
+
 from setuptools import setup, find_packages
+from setuptools.command.test import test
 
 
-def requirements():
+class PyTest(test):
+    def run_tests(self):
+        import pytest
+        sys.exit(pytest.main(['tests']))
+
+
+def requirements(section):
     """Создание листа зависимостей для этого проекта."""
-    requirements_list = []
+    with open('Pipfile.lock') as pip_file:
+        pipfile_json = json.load(pip_file)
 
-    with open('requirements.txt') as requirements:
-        for install in requirements:
-            requirements_list.append(install.strip())
-
-    return requirements_list
+    return [package + detail.get('version', '')
+            for package, detail in pipfile_json[section].items()]
 
 
-packages = find_packages(exclude=['tests*'])
+packages = find_packages()
 
 with open('README.rst', 'r', encoding='utf-8') as f:
-    setup(name='yandex-music',
-          version='0.0.16',
-          author='Il`ya Semyonov',
-          author_email='Ilya@marshal.by',
-          license='LGPLv3',
-          url='https://github.com/MarshalX/yandex-music-api/',
-          keywords='python yandex music api wrapper library питон яндекс музыка апи обёртка библиотека',
-          description="Делаю то, что по определённым причинам не сделала компания Yandex.",
-          long_description=f.read(),
-          packages=packages,
-          install_requires=requirements(),
-          include_package_data=True,
-          classifiers=[
-              'Development Status :: 2 - Pre-Alpha',
-              'Natural Language :: Russian',
-              'Intended Audience :: Developers',
-              'License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)',
-              'Operating System :: OS Independent',
-              'Topic :: Software Development :: Libraries :: Python Modules',
-              'Topic :: Multimedia :: Sound/Audio',
-              'Topic :: Internet',
-              'Programming Language :: Python',
-              'Programming Language :: Python :: 3.6',
-              'Programming Language :: Python :: 3.7',
-              'Programming Language :: Python :: 3.8'
-          ],)
+    readme = f.read()
+
+with open('CHANGES.rst', 'r', encoding='utf-8') as f:
+    changes = f.read()
+
+
+setup(name='yandex-music',
+      version='0.0.16',
+      author='Il`ya Semyonov',
+      author_email='Ilya@marshal.by',
+      license='LGPLv3',
+      url='https://github.com/MarshalX/yandex-music-api/',
+      keywords='python yandex music api wrapper library питон яндекс музыка апи обёртка библиотека',
+      description='Делаю то, что по определённым причинам не сделала компания Yandex.',
+      long_description=f'{readme}\n{changes}',
+      packages=packages,
+      install_requires=requirements('default'),
+      include_package_data=True,
+      classifiers=[
+          'Development Status :: 2 - Pre-Alpha',
+          'Natural Language :: Russian',
+          'Intended Audience :: Developers',
+          'License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)',
+          'Operating System :: OS Independent',
+          'Topic :: Software Development :: Libraries :: Python Modules',
+          'Topic :: Multimedia :: Sound/Audio',
+          'Topic :: Internet',
+          'Programming Language :: Python',
+          'Programming Language :: Python :: 3.6',
+          'Programming Language :: Python :: 3.7',
+          'Programming Language :: Python :: 3.8'
+      ],
+      cmdclass={'test': PyTest},
+      tests_require=requirements('develop'),
+      project_urls={
+          'Code': 'https://github.com/MarshalX/yandex-music-api',
+          'Documentation': 'https://yandex-music.readthedocs.io',
+          'Chat': 'https://ttttt.me/yandex_music_api',
+          'Codecov': 'https://codecov.io/gh/MarshalX/yandex-music-api',
+          'Codacy': 'https://www.codacy.com/manual/MarshalX/yandex-music-api',
+      })