stats: /stats/history and History, Politics and Culture sections on NL, Gouda, Curaçao, US and KR pages (step 4)

Long-run charts (Maddison, HYDE, UN via OWID; CBS and Pew religion), a filterable
sourced timeline, Wikidata office holders and turnout, Nager.Date holidays, UNESCO
sites, Wikidata people by sitelinks, curated food and cultural exports. Wikidata
labels now fall back to mul.

src/lib/projects.ts

@@ -64,6 +64,12 @@ export const statsPages = [
 		href: '/stats/elections',
 		external: false
 	},
+	{
+		name: 'history',
+		subtitle: 'the long run, a sourced timeline, politics and culture of five places',
+		href: '/stats/history',
+		external: false
+	},
 	{
 		name: 'opinions',
 		subtitle: 'polls, Eurobarometer, happiness, search trends and party positions',