DOC: Enable nitpicky [ci skip]

docs/conf.py

@@ -28,7 +28,6 @@
 import os
 import sys
 import datetime
-from pkg_resources import get_distribution
 
 try:
     from sphinx_astropy.conf.v1 import *  # noqa
@@ -76,10 +75,10 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 
-package = get_distribution(project)
+from jdaviz import __version__
 
 # The full version, including alpha/beta/rc tags.
-release = package.version
+release = __version__
 # The short X.Y version.
 version = '.'.join(release.split('.')[:2])
 
@@ -160,10 +159,11 @@
 github_issues_url = 'https://github.com/{0}/issues/'.format(setup_cfg['github_project'])
 
 # -- Turn on nitpicky mode for sphinx (to warn about references not found) ----
-#
-# nitpicky = True
-# nitpick_ignore = []
-#
+nitpicky = True
+
+# Do not populate this if you use nitpick-exceptions below.
+nitpick_ignore = []
+
 # Some warnings are impossible to suppress, and you can list specific references
 # that should be ignored in a nitpick-exceptions file which should be inside
 # the docs/ directory. The format of the file should be:
@@ -183,4 +183,4 @@
 #         continue
 #     dtype, target = line.split(None, 1)
 #     target = target.strip()
-#     nitpick_ignore.append((dtype, six.u(target)))
+#     nitpick_ignore.append((dtype, target))