[doc] Documentation work for the 0.4 release (not finished).

requirements-dev.txt

@@ -1,24 +1,32 @@
 -e .[dev]
 alabaster==0.7.10
+arrow==0.10.0
 babel==2.4.0
+binaryornot==0.4.3
 certifi==2017.4.17
 chardet==3.0.3
+click==6.7
+cookiecutter==1.5.1
 coverage==4.4.1
 docutils==0.13.1
+future==0.16.0
 idna==2.5
 imagesize==0.7.1
+jinja2-time==0.2.0
 jinja2==2.9.6
 markupsafe==1.0
+poyo==0.4.1
 py==1.4.33
 pygments==2.2.0
 pytest-cov==2.5.1
 pytest-timeout==1.2.0
 pytest==3.1.0
+python-dateutil==2.6.0
 pytz==2017.2
 requests==2.16.5
 six==1.10.0
 snowballstemmer==1.2.1
-sphinx==1.6.1
+sphinx==1.6.2
 sphinxcontrib-websupport==1.0.1
-typing==3.6.1
 urllib3==1.21.1
+whichcraft==0.4.1