Update/fix sample dependency to make audrey build with nightly

[virtualritz]

Audrey 0.2.0 depends on sample 0.9.1. This crate has been discontinued and is not called dasp.

When using nightly Audrey breaks because of sample:

error[E0282]: type annotations needed
  --> /Users/moritz/.cargo/registry/src/github.com-1ecc6299db9ec823/sample-0.9.1/src/window.rs:73:41
   |
73 |         let v = phase.to_float_sample().to_sample() * PI_2;
   |                                         ^^^^^^^^^ cannot infer type for type parameter `S` declared on the associated function `to_sample`
   |
help: consider specifying the type argument in the method call
   |
73 |         let v = phase.to_float_sample().to_sample::<S>() * PI_2;
   |                                                  ^^^^^

This happens also on master which depends on sample 0.10.

dasp does build with nightly.

[est31]

PRs welcome!

[mitchmindtree]

Closed via #28.