Issue with mapping Java class fields of type `byte[]` to a `Field` with type `Box<[u8]>` about robusta HOT 1 OPEN

@David-Petrov, it works in #50 version. I actually don't understand why it doesn't work in the master version, a lot of changes were made, but you suggestions aren't true.

UPD: It's because TryFromJavaValue::Source and TryIntoJavaValue::Target were primitive jbyteArray, alias for jobject, not wrapped JObject, and this type must be infallibly convertible into JValue and fallibly - from JValueWrapper:

    <T as TryFromJavaValue<'env, 'borrow>>::Source: TryFrom<JValueWrapper<'env>, Error = JniError>,
    JValue<'env>: From<<T as TryIntoJavaValue<'env>>::Target>,

Note, that type for byte[] was changed from Box<[u8]> to Box<[i8]> to be consistent with byte -> i8 conversion, see the issue in the jni-rs repo.
Now I see it can be inconvenient when working with String <-> byte[] on the Java side and str <-> &[u8] on the Rust side, but that's it, bytes are unsigned in rust and signed in java.

from robusta.