Adding meta tags to <head>?

Monkey patch!

class Dash_responsive(dash.Dash):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

    #Overriding from
    def index(self, *args, **kwargs):
        scripts = self._generate_scripts_html()
        css = self._generate_css_dist_html()
        config = self._generate_config_html()
        title = getattr(self, 'title', 'Dash')
        return ('''
        <!DOCTYPE html>
                <meta charset="UTF-8"/>
                <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
                <div id="react-entry-point">
                    <div class="_dash-loading">
        '''.format(title, css, config, scripts))

app = Dash_responsive()
# so on and so on 

I guess it would be nice to have a head and a footer variable so that users could set this without the need for a patch like this.