multi-sample-rate support, evk fixes

Cargo.lock

@@ -756,7 +756,7 @@ dependencies = [
 
 [[package]]
 name = "guac"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "atomic",
  "bbqueue",
@@ -1795,9 +1795,9 @@ dependencies = [
 
 [[package]]
 name = "usbd-uac2"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88b77e75c12ae8e2be3b2d8a111117a0025ea17ad6de7e8f941ba500adfa8a7a"
+checksum = "07c0e506a7eadf9dee3039a4fa00dee84b8ed0c4a5931424b81659e0800c4965"
 dependencies = [
  "byteorder-embedded-io",
  "defmt 1.1.1",