Address().fromBuffer(buf);
more convenient Base58 constructor
more convenient constructor

...allow inputing strings or buffers in the constructor.
console.log?

this must have been a remnant of some earlier debugging, either in bitcore2 or
in bitcore.
"gc" was some find-replace error from earlier
use base58check in fromString
use base58check in extendedPublicKeyString
base58check in extendedPrivateKeyString
remove unused base58 dependency
use buffer functions

...instead of adhoc uint functions
support string input in constructor
add set function to bip32
Key -> Keypair
more convenient name
more convenient name
more convenient names
canonical BN notation
convenience: varint -> vi
add fromString method for library consistency
bnjs -> BN ... for consistency