All constructors for making a TrueType font take an optional settings table.

This supersedes the existing optional hinting and dpi scale parameters. The table's fields are:
{
  hinting = "normal",
  dpiscale = 1, -- nil will default to the current window DPI scale.
}

src/common/Optional.h

@@ -46,7 +46,7 @@ struct Optional
 		hasValue = true;
 	}
 
-	T get(T defaultVal)
+	T get(T defaultVal) const
 	{
 		return hasValue ? value : defaultVal;
 	}