After cargo update it stop working: hmac change compatibility with

[dnp1]

I believe hmac library changes and broke compatibility!

error[E0576]: cannot find method or associated constant new_from_slice in trait hmac::Mac
--> /home/danilo/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/altcha-lib-rs-0.3.2/src/utils.rs:57:44
|
57 | let mut mac = ::new_from_slice(key.as_bytes())
| ^^^^^^^^^^^^^^ not found in hmac::Mac
`

[jmic]

Thanks for reporting the error!
Solved now with #9