Update setuptools to 38.2.1

[pyup-bot]

There's a new version of setuptools available.
You are currently using 36.5.0. I have updated it to 38.2.1

These links might come in handy: PyPI | Changelog | Repo

Changelog

38.2.1

---

• 1212: fix encoding handling of metadata when installing
  from a wheel.

38.2.0

---

• 1200: easy_install now support installing from wheels:
  they will be installed as standalone unzipped eggs.

38.1.0

---

• 1208: Improve error message when failing to locate scripts
  in egg-info metadata.

38.0.0

---

• 458: In order to support deterministic builds, Setuptools no
  longer allows packages to declare install_requires as
  unordered sequences (sets or dicts).

37.0.0

---

• 878: Drop support for Python 2.6. Python 2.6 users should
  rely on 'setuptools < 37dev'.

36.8.0

---

• 1190: In SSL support for package index operations, use SNI
  where available.

36.7.3

---

• 1175: Bug fixes to build_meta module.

36.7.2

---

• 701: Fixed duplicate test discovery on Python 3.

36.7.1

---

• 1193: Avoid test failures in bdist_egg when
  PYTHONDONTWRITEBYTECODE is set.

36.7.0

---

• 1054: Support setup_requires in setup.cfg files.

36.6.1

---

• 1132: Removed redundant and costly serialization/parsing step
  in EntryPoint.__init__.

• 844: bdist_egg --exclude-source-files now tested and works
  on Python 3.

36.6.0

---

• 1143: Added setuptools.build_meta module, an implementation
  of PEP-517 for Setuptools-defined packages.

• 1143: Added dist_info command for producing dist_info
  metadata.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖

[pyup-bot]

Closing this in favor of #103