* fix: Put function importPrivateKey in correct file

* Fix import

* feat: Generic `decode` also decodes unsigned

* dpcs

* Don't expose decode*

* decode doesn't decode signingPayload

BREAKING CHANGE:

- `decodeTx` has been renamed to `decodeSignedTx` for clarity

* fix: Fix keepAlive

* feat: Add decodeUnsignedTx

* Generate docs

* Export new functions