Feature/sound (#389)

* WIP sound lib

* basically finishes sound interface, still needs circle of fifths for updates etc.

* finishes sound interface, includes light testing

* fixes loops to use euclidian remainder

* implements locking for the sound interface

* stop sleeping on blocks

appmgr/src/lib.rs

@@ -35,6 +35,7 @@ pub mod migration;
 pub mod net;
 pub mod registry;
 pub mod s9pk;
+pub mod sound;
 pub mod ssh;
 pub mod status;
 pub mod util;