Vendor dependencies for 0.3.0 release

vendor/fontdb/tests/add_fonts.rs

@@ -0,0 +1,15 @@
+const DEMO_TTF: &[u8] = include_bytes!("./fonts/Tuffy.ttf");
+use std::sync::Arc;
+
+#[test]
+fn add_fonts_and_get_ids_back() {
+    env_logger::init();
+    let mut font_db = fontdb::Database::new();
+    let ids = font_db.load_font_source(fontdb::Source::Binary(Arc::new(DEMO_TTF)));
+
+    assert_eq!(ids.len(), 1);
+    let id = ids[0];
+
+    let font = font_db.face(id).unwrap();
+    assert!(font.families.iter().any(|(name, _)| name == "Tuffy"));
+}