def METHOD_NAME(app):
    app.add_css_file('theme_override.css')
    app.add_js_file('versions.js')
    app.add_config_value('releaselevel', '', 'env')
    from sphinx.util.texescape import tex_replacements
    tex_replacements += [(u'♮', u'$\\natural$'),
                         (u'ē', u'\=e'),
                         (u'♩', u'\quarternote'),
                         (u'↑', u'$\\uparrow$'),
                         ]