refactor: change version to 3.8 (#12)

setup.cfg

@@ -1,3 +1,7 @@
+# All configuration for plugins and other utils is defined here.
+# Read more about `setup.cfg`:
+# https://docs.python.org/3/distutils/configfile.html
+
 [bumpversion]
 files = README.rst
 commit = False
@@ -19,7 +23,7 @@ exclude = .tox,.git,*/migrations/*,*/static/CACHE/*,docs,node_modules
 doctests = True
 inline-quotes = single
 accept-encodings = utf-8
-per-file-ignores = 
+per-file-ignores =
 	tests/*.py: S101, Z432
 	hooks/*.py: T001
 	**/*.py: D100, D104, D106, D401, X100
@@ -29,7 +33,7 @@ max-line-length = 100
 exclude = .tox,.git,*/migrations/*,*/static/CACHE/*,docs,node_modules
 
 [mypy]
-python_version = 3.6
+python_version = 3.8
 check_untyped_defs = True
 ignore_errors = False
 ignore_missing_imports = True
@@ -70,4 +74,3 @@ addopts =
 	--ignore .egg
 	-s -v
 	--doctest-modules
-