include A-Z in pattern_re too (no longer re.I)

indigo/analysis/refs/base.py

@@ -162,7 +162,7 @@ def setup_subtypes(self):
                 (?P<ref>
                     \b(?P<subtype>{subtypes_string})\s*
                     ([nN]o\.?\s*)?
-                    (?P<num>[a-z0-9-]+)
+                    (?P<num>[a-zA-Z0-9-]+)
                     (\s+of\s+|/)
                     (?P<year>\d{{4}})
                 )