Fix Flake8, drop support for Python 3.4 and 3.5

modified:   .travis.yml
modified:   CHANGES.rst
modified:   pyproject.toml
modified:   setup.py
modified:   tox.ini

.travis.yml

@@ -2,12 +2,10 @@ dist: xenial
 language: python
 
 python:
-    - "3.4"
-    - "3.5"
     - "3.6"
     - "3.7"
     - "3.8"
-    - "pypy3.6-7.1.1"
+    - "pypy3"
 matrix:
   include:
     - python: "3.7"

CHANGES.rst

@@ -4,7 +4,9 @@ CHANGES
 0.4 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Fix Flake8.
+
+- Drop support for Python 3.4 and 3.5.
 
 
 0.3 (2020-04-26)

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 80
-target-version = ['py34', 'py35', 'py36', 'py37', 'py38']
+target-version = ['py36', 'py37', 'py38']
 include = '\.pyi?$'
 exclude = '''
 (

setup.py

@@ -23,8 +23,6 @@
     classifiers=[
         "Intended Audience :: Developers",
         "License :: OSI Approved :: BSD License",
-        "Programming Language :: Python :: 3.4",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",

tox.ini

@@ -1,24 +1,24 @@
 [tox]
-envlist = py34, py35, py36, py37, py38, pypy3, pep8, coverage
+envlist = py36, py37, py38, pypy3, pep8, coverage
 skipsdist = True
 skip_missing_interpreters = True
 
 [testenv]
 usedevelop = True
 extras = test
 
-commands = py.test {posargs}
+commands = pytest {posargs}
 
 [testenv:pep8]
 basepython = python3.7
 extras = pep8
 
-commands = flake8 more *.py
+commands = flake8 more
            black --check .
 
 [testenv:coverage]
 basepython = python3.7
 extras = test
          coverage
 
-commands = py.test --cov --cov-fail-under=100 {posargs}
+commands = pytest --cov --cov-fail-under=100 {posargs}