It's annoying and easy to forget to type in bitcore.KeyModule.Key. I have
updated this so that now you can just do bitcore.Key. Tests pass in node and
the browser. This is a backwards-incompatible change so all software that
depends on the old style key generation will need to be updated.
...to allow them to be imported into other wallets, preserving the "compressed"
or "uncompressed" state of the public key in the private key representation.