zune-farbfeld 0.4.0

## Zune-farbfeld

Farbfeld decoding and encoding support

### Usage

Add `zune-farbfeld` to your `Cargo.toml`

```toml
zune-farbfeld = "[LATEST]"
```

You can then use `FarbfeldDecoder` to decode images
and `FarbfeldEncoder` to encode images

### Endianness

Where endianness matters, the library either takes or uses native endian