Hi all. I have just uploaded a python package that implements SEP-0005:
In addition to deriving Stellar account keys from BIP39 seed phrases, this tool allows you to derive Stellar account keys from Electrum seed phrases. The code checks if a seed phrase is BIP39-compliant or Electrum-generated, and acts accordingly. The derivation of a master binary seed from a seed phrase either follows BIP39 or uses Electrum' s algorithm. In both cases (BIP39 phrases and Electrum phrases), the derivation of Stellar keys from the master binary seed follows SEP-0005.
Give it a spin and let me know what you think!