0.3.1

This release enforces key checks.

The key function now returns a bool if it accepted the key. You might want to check the return in your code.

The key is not accepted if:

• The length exceeds the message length.
  • BLAKE2s256 accepts up to 32 Bytes and BLAKE2b512 up to 64 Bytes.
• A key or data was already given.

The OOP wrapper throws an exception.