hd-wallet-derive-v0.4.0

This is a big release. The major new things are:

• segwit support for bitcoin and most btc derived coins. (segwit keys for other coins is super highly experimental)
• both p2sh (y) and bech32 (z) segwit addresses are supported.
• support for LTC Ltub/Mtub style keys in addition to xpub/xpriv
• support for LTC new style p2sh 'M' addresses.
• lots of test cases
• various bug fixes and enhancements.

At this moment, I believe this tool will generate keys/addresses for more blockchains (including testnets, regtest) than any other tool on the planet.

See the readme for details and examples of using segwit keys.