Implementation of the following BIPs:
- BIP32 (https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki)
- BIP39 (https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki)
- BIP44 (https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki)