Dependency update

pylint can be removed as it is now pinned in prospector.

Author: pgjones

tox.ini

@@ -3,8 +3,8 @@ envlist = py27, py35, py36, py37, pypy, format, lint, packaging, docs
 
 [testenv]
 deps =
-    pytest==4.0.0
-    pytest-cov==2.6.0
+    pytest==4.1.1
+    pytest-cov==2.6.1
     {env:CI_DEPS:}
     {env:EXTRA_DEPS:}
 passenv = CODECOV_TOKEN CI CI_* TRAVIS TRAVIS_*
@@ -36,13 +36,12 @@ commands =
 basepython = python3.6
 # pylint==2.1.1 required due to prospector bug, see https://github.com/PyCQA/prospector/pull/309
 deps =
-    prospector==1.1.4
-    pylint==2.1.1
+    prospector==1.1.6.2
 commands = prospector
 
 [testenv:docs]
 basepython = python3.6
-deps = sphinx==1.8.2
+deps = sphinx==1.8.3
 whitelist_externals = make
 changedir = {toxinidir}/docs
 commands =