update dependencies including sphinx and docutils

Author: benjaminp

Diff for: requirements.txt

@@ -1,21 +1,22 @@
 alabaster==0.7.10
 Babel==2.4.0
-certifi==2017.4.17
+certifi==2018.1.18
 chardet==3.0.4
-docutils==0.13.1
-idna==2.5
-imagesize==0.7.1
-Jinja2==2.9.6
+docutils==0.14
+idna==2.6
+imagesize==1.0.0
+Jinja2==2.10
 MarkupSafe==1.0
 Pygments==2.2.0
-pytz==2017.2
-requests==2.17.3
-six==1.10.0
+pyparsing==2.2.0
+pytz==2018.4
+requests==2.18.4
+six==1.11.0
 snowballstemmer==1.2.1
-Sphinx==1.6.4
-sphinx-rtd-theme==0.1.9
-blurb==1.0.4
+Sphinx==1.7.2
+sphinx-rtd-theme==0.3.0
+blurb==1.0.6
 sphinxcontrib-websupport==1.0.1
 typing==3.6.1
-urllib3==1.21.1
+urllib3==1.22
 python-docs-theme==0.0.1