Updated files with git_helper.

Author: domdfcoding

tox.ini

@@ -45,7 +45,7 @@ commands =
 
 [testenv:docs]
 basepython = python3.8
-changedir={toxinidir}/doc-source
+changedir = {toxinidir}/doc-source
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/doc-source/requirements.txt
 commands = sphinx-build -M html . ./build {posargs}
@@ -70,48 +70,48 @@ commands = python setup.py {posargs} sdist bdist_wheel
 
 [testenv:lint]
 basepython = python3.6
-changedir={toxinidir}
-ignore_errors=true
+changedir = {toxinidir}
+ignore_errors = true
 skip_install = true
 deps =
     autopep8 >=1.5.2
     flake8 >=3.8.2
     flake8-2020 >= 1.6.0
-    git+https://github.com/domdfcoding/flake8_strftime.git
+    flake8_strftime
 commands = flake8 domdf_python_tools tests
 
 
 [testenv:yapf]
 basepython = python3.7
-changedir={toxinidir}
+changedir = {toxinidir}
 skip_install = true
-ignore_errors=true
+ignore_errors = true
 deps = yapf
 commands = yapf -i --recursive domdf_python_tools tests
 
 
 [testenv:isort]
 basepython = python3.6
 skip_install = true
-ignore_errors=true
-changedir={toxinidir}
+ignore_errors = true
+changedir = {toxinidir}
 deps = git+https://github.com/timothycrosley/isort.git@6ffdc23d95e27f8a3637a1b77c7049ed62222272
 commands = isort domdf_python_tools tests
 
 
 [testenv:mypy]
 basepython = python3.6
 
-ignore_errors=true
-changedir={toxinidir}
+ignore_errors = true
+changedir = {toxinidir}
 deps = mypy
 commands = mypy domdf_python_tools tests
 
 
 [testenv:pyup]
 basepython = python3.6
 
-ignore_errors=true
+ignore_errors = true
 changedir={toxinidir}
 deps = pyupgrade-directories
 commands = pyup_dirs domdf_python_tools tests --py36-plus --recursive
@@ -120,9 +120,9 @@ commands = pyup_dirs domdf_python_tools tests --py36-plus --recursive
 [testenv:qa]
 basepython = python3.6
 skip_install = True
-ignore_errors=true
-whitelist_externals=tox
-changedir={toxinidir}
+ignore_errors = true
+whitelist_externals = tox
+changedir = {toxinidir}
 commands = tox -e pyup,isort,yapf,mypy,lint {posargs}