Vendor dependencies for 0.3.0 release

vendor/rodio/benches/conversions.rs

@@ -0,0 +1,21 @@
+use cpal::FromSample;
+use divan::Bencher;
+use rodio::Source;
+
+mod shared;
+use shared::TestSource;
+
+fn main() {
+    divan::main();
+}
+
+#[divan::bench(types = [i16, u16, f32])]
+fn from_i16_to<T: rodio::Sample + FromSample<i16>>(bencher: Bencher) {
+    bencher
+        .with_inputs(|| TestSource::music_wav())
+        .bench_values(|source| {
+            source
+                .convert_samples::<T>()
+                .for_each(divan::black_box_drop)
+        })
+}