Re-integrate pytest-timeout plugin

Author: Peque

tox.ini

@@ -8,6 +8,9 @@ envlist =
     lint
     docs
 
+[pytest]
+timeout = 10
+
 [flake8]
 ignore =
     __init__.py E402 F401
@@ -21,7 +24,7 @@ deps =
     -e.[test]
 commands =
     pytest --basetemp={envtmpdir} --cache-clear -sv --cov \
-        {posargs:-n 8}
+         --timeout-method=thread {posargs:-n 8}
 
 [testenv:lint]
 deps =