open ports; start work on sampler

src/prelude.rs

@@ -0,0 +1,34 @@
+pub use std::error::Error;
+pub use std::io::{stdout, Stdout, Write};
+pub use std::thread::spawn;
+pub use std::time::Duration;
+pub use std::sync::{
+    Arc,
+    atomic::{AtomicBool, Ordering}, 
+    mpsc::{channel, Sender, Receiver}
+};
+pub use crossterm::{
+    QueueableCommand, 
+    cursor,
+    terminal,
+    style::*,
+};
+pub use jack::{
+    AsyncClient,
+    AudioIn,
+    AudioOut,
+    Client,
+    ClientOptions,
+    ClientStatus,
+    ClosureProcessHandler,
+    Control,
+    Frames,
+    NotificationHandler,
+    Port,
+    PortId,
+    ProcessScope,
+};
+pub type Jack<N> = AsyncClient<
+    N,
+    ClosureProcessHandler<Box<dyn FnMut(&Client, &ProcessScope)-> Control + Send>>
+>;