MNT: Update extras

Author: effigies

setup.cfg

@@ -40,12 +40,19 @@ include_package_data = True
 
 [options.extras_require]
 dicom =
-    dicom >=0.9.9
+    pydicom >=0.9.9
 doc =
+    matplotlib >= 1.3.1
+    mock
+    numpydoc
     sphinx >=0.3
+    texext
+style =
+    flake8
 test =
-    nose >=0.10.1
+    coverage
     mock
+    nose >=0.10.1
 all =
     %(dicom)s
     %(doc)s