Verbose pep257, add mypy to windows, generate mypy reports

(cherry picked from commit 2e3355c)

Author: penguinolog

.gitignore

@@ -1,6 +1,7 @@
 ### Test results
 /*_result*.xml
 /report.html
+/mypy_report/*
 /assets/*
 .cache/*
 .pytest_cache/*

.travis.yml

@@ -72,7 +72,7 @@ jobs:
     - *upgrade_python_toolset
     - pip install --upgrade pydocstyle
     script:
-    - pydocstyle exec_helpers
+    - pydocstyle -v exec_helpers
 
   - stage: test
     <<: *python27

tox.ini

@@ -47,7 +47,7 @@ commands = flake8
 deps =
     pydocstyle
 usedevelop = False
-commands = pydocstyle exec_helpers
+commands = pydocstyle -v exec_helpers
 
 [testenv:install]
 deps =
@@ -141,5 +141,6 @@ commands = pipdeptree
 usedevelop = False
 deps =
     mypy>=0.650
+    lxml
     -r{toxinidir}/CI_REQUIREMENTS.txt
-commands = mypy --strict exec_helpers
+commands = mypy --strict --xslt-html-report mypy_report -p exec_helpers