a bunch of minor changes combined:

- From instead of Into
- unsafe_data_ref for other payloads
- CByteSlice for returning memory spans
- send Packet instead of Into<Packet>
- expose packet layer to C/C#

examples/wiping_clear/src/main.rs

@@ -36,7 +36,7 @@ fn main() {
         let bit_vec = BitVec::from(&*pixel_data);
 
         connection
-            .send(Command::BitmapLinearAnd(0, bit_vec, CompressionCode::Gz))
+            .send(Command::BitmapLinearAnd(0, bit_vec, CompressionCode::Gz).into())
             .unwrap();
         thread::sleep(sleep_duration);
     }