--- ./Docs/Book/conf.py.orig	2019-01-08 23:09:17.564278966 +0100
+++ ./Docs/Book/conf.py	2019-01-08 23:09:23.624345836 +0100
@@ -25,7 +25,7 @@
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest'] #, 'extapi']
+extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.imgconverter'] #, 'extapi']
 #autosummary_generate = True
 doctest_test_doctest_blocks=""