Forgot to add new function names to __all__.

nikola/utils.py

@@ -68,7 +68,8 @@
            'get_displayed_page_number', 'adjust_name_for_index_path_list',
            'adjust_name_for_index_path', 'adjust_name_for_index_link',
            'NikolaPygmentsHTML', 'create_redirect', 'TreeNode',
-           'flatten_tree_structure']
+           'flatten_tree_structure', 'parse_escaped_hierarchical_category_name',
+           'join_hierarchical_category_path']
 
 # Are you looking for 'generic_rss_renderer'?
 # It's defined in nikola.nikola.Nikola (the site object).