typing was never updated for py37 (#131)

Extend CI

(cherry picked from commit c6effd4)
Signed-off-by: Aleksei Stepanov <penguinolog@gmail.com>

Author: penguinolog

.travis.yml

@@ -84,7 +84,7 @@ jobs:
     install:
     - *upgrade_python_toolset
     - *install_deps
-    - pip install --upgrade "mypy >= 0.660"
+    - pip install --upgrade "mypy >= 0.670"
     script:
     - mypy --strict exec_helpers
 

requirements.txt

@@ -4,5 +4,5 @@ six>=1.10.0  # MIT
 threaded>=2.0  # Apache-2.0
 PyYAML>=3.12  # MIT
 advanced-descriptors>=1.0  # Apache-2.0
-typing >= 3.6 ; python_version < "3.8"
+typing >= 3.6 ; python_version < "3.7"
 psutil >= 5.0

tox.ini

@@ -99,8 +99,16 @@ exclude =
 ignore =
     E203,
     W503
+    D401,
+    D202,
+    D203,
+    D213
 # whitespace before ':'
 # line break before binary operator
+# First line should be in imperative mood; try rephrasing
+# No blank lines allowed after function docstring
+# 1 blank line required before class docstring
+# Multi-line docstring summary should start at the second line
 show-pep8 = True
 show-source = True
 count = True
@@ -143,7 +151,7 @@ commands = pipdeptree
 
 [testenv:mypy]
 deps =
-    mypy>=0.660
+    mypy>=0.670
     lxml
     -r{toxinidir}/CI_REQUIREMENTS.txt
 usedevelop = False